1. Explain whether each following example is proportional or non-proportional.
(a)y=7x-3
(b)The graph is for b
(c) A gallon of milk costs $1.99. A half-gallon of milk costs $3.89.
(d)
x y
2 13
3 19.5
4 26
5 32.5
Answers
9514 1404 393
Answer:
(a), (b), (c) are non-proportional
(d) is proportional
Step-by-step explanation:
An equation or graph with a non-zero y-intercept is non-proportional. That is true for (a), (b), (c).
The table of (d) is proportional, with a constant of proportionality of 6.5.
__
Comment on (c)
In a proportional relation, price would go up with quantity, not down. If the prices both end in 9, one cannot be double the other, as would be required for the price of a gallon to be proportional to the price of a half-gallon.
Related Questions
Which equation represents a line which is parallel to the line 7y−x=−28?
Answers
The equation represents a line which is parallel to the line 7y−x=−28 is y=1/7 x.
The given equation is 7y-x=-28.
What is an equation?In mathematics, an equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.
Here, equation can be rewritten as x-7y-28=0
So, slope of line = 1
As we know, slope of parallel lines are equal. If the slopes of two parallel lines are represented as m1, m2 then we have m1 = m2.
Now, m1 = m2 = 1
Find the slope of the original line and use the point-slope formula y−y1=m(x−x1) to find the line parallel to 7y−x=−28.
y=1/7 x
Therefore, the equation represents a line which is parallel to the line 7y−x=−28 is y=1/7 x.
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To go to school each day, Myra walks 20 yards due south to the bank then 48 yards east. Which measurement is closest to the shortest distance, in yards, from Myra's house to the school?
Answers
Answer:
52
Step-by-step explanation:
Answer:
68 yard
Step-by-step explanation:
just add the two numbers.
Aidan makes a snack mix for a party using ½ bag of chips for every 2 bags of
cheetos. How many bags of cheetos did he use if he used 1 bag of chips?
Answers
Therefore, for 1 bag of chips, he used 4 bags of Cheetos.
Given that 1/2 bag of chips is used for every 2 bags of Cheetos.
Now we have to determine how many bags of Cheetos did he use if he used 1 bag of chips as
1/2 bag of chips = 2 bags of Cheetos
1 bag of chips = x
1/2 / 1 = 2 / x
By cross multiplying we get
1/2 x = 2
x = 2 / 1/2
x = 2 * 2
x = 4
Therefore, for 1 bag of chips, he used 4 bags of Cheetos.
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Help me Asap,
Find the coordinates of the point of intersection of the lines 2x + y = - 1 and 3x - 4y =
Answers
Answer: (- 0.3636, - 0.2727)
Step-by-step explanation:
2x + y = - 1
3x - 4y = 0
X= - 0.3636
Y= - 0.2727
Whats The Answer Marking Brainliest, Please explain your answer:D..............................Please HELP!
Answers
Answer: D
Step-by-step explanation: when you reflect across an axis, the axis that you are reflecting across doesn't change, the other one does. so in this case, the y axis doesn't change, but the x axis does, so we know that the y axis is being reflected.
I need help in like 1 minute pleaseee
Answers
Which is greater 60 gallons or 60 liters?
Answers
Answer:
here I am again
60 gallons
Step-by-step explanation:
Katie deleted my answer and I got warned
first sheet (picture included) brainliest!
Answers
Answer:
The equations are;
a -b + c = 5
c = -4
16a + 4b + c = 0
Step-by-step explanation:
Generally, the equation of a quadratic formula can be written as;
y = ax^2 + bc + c
From the graph, we have three points and we want to form equations from these points
These points are;
(-1,5) (0,-4) and (4,0)
To get the equation from each point, we make a substitution for both x and y
For the first;
5 = a(-1)^2 + b(-1) + c
5 = a-b + c
For the second;
-4 = a(0)^2 + b(0) + c
c = -4
For the third;
0 = a(4)^2 + b(4) + c
0 = 16a + 4b + c
30 POINTS TO WHOEVER CAN ANSWER THIS AND BRAINLIEST
Answers
Answer:
it is b or c, I would go for c tho
Step-by-step explanation:
brainliest? plz
Please give me an answer fast! :(
Which line has the greatest rate of change?
A. The line passing through (1,3) and (5,1)
B The line passing through (-1,3) and (1,7)
C The line passing through (1,1) and (4,-3)
D The line passing through (0,6) and (12,9)
Answers
Answer:
The answer is D
Step-by-step explanation:
If wrong plz correct me if right plz mark brainliest
Roxanne invests $4.000 into an account that pays 4% simple interest. Roger invests the same amount of money with the same rate, but the
Interest is compounded annually. What will be the difference in Roxanne's and Roger's accounts after five years if no additional amounts are
deposited? Round to the nearest cent.
Answers
Answer:
Step-by-step explanation:
What grade?
Answer:
$67
Step-by-step explanation:
4000 for 4% equal $160/year total in 5 year equal $4800
the other one 4160 1 year, 4327 2 year, 4500 3 year, 4680 4 year, 4867 5 year the difference is $67 more has Roger than Roxanne
Here is a polygon. Draw a scaled
copy of the polygon using a scale
factor of 1/3.
Answers
To draw a scaled copy of the polygon using a scale factor of 1/3, just multiply the given sides of the polygon with 1/3 and the outcome is the new polygon with a scale factor of 1/3.
What is a scale factor?You shall specify the extent of the shape's enlargement when describing one. The scaling factor refers to this. A scale factor of 2, for instance, indicates that the new shape is twice as large as the previous shape.
The size of the shape reduces when the scaling factor is a fraction, yet we still refer to this as an enlargement. A scale factor of 1/4 therefore indicates that the new shape is 1/4 as large as the old one.
Make sure you never confuse the scale factor. One might mistake a scale factor of 2 for a scale factor of 12, or a scale factor of 4 for a scale factor of 14.
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The sum of two numbers is 10 and the difference is 6. What is the product of the two numbers?
Answers
Answer:
16
Step-by-step explanation:
the numbers are 8 and 2.
Find the quotient for the following problems.
16/224=
38/792=
42/504=
47/5,170=
58/7,211=
Answers
Answer:
14,20.84,12,110,124.32
16x+14y=8
-63x-14y=133
Answers
Answer:
(-3, 4)
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Algebra I
Solving systems of equations using substitution/eliminationSolving systems of equations by graphingStep-by-step explanation:
Step 1: Define Systems
16x + 14y = 8
-63x - 14y = 133
Step 2: Solve for x
Elimination
Combine 2 equations: -47x = 141Divide -47 on both sides: x = -3Step 3: Solve for y
Define original equation: 16x + 14y = 8Substitute in x: 16(-3) + 14y = 8Evaluate multiplication: -48 + 14y = 8Add 48 on both sides: 14y = 56Divide 14 on both sides: y = 4Step 4: Graph Systems
Check the solution set.
Identify the line of symmetry.
line q
line p
line r
Answers
Answer:
Line r
Step-by-step explanation:
I took the Test
Junior's candy tax is working great for him. When any other student buys candy from the student store, Junior takes two pieces for himself for every five pieces the student buys. If his friend George bought 35 pieces of candy, how many pieces will go to Junior?
Answers
Answer:
14 pieces of candy
Step-by-step explanation:
Junior's candy tax is working great for him. When any other student buys candy from the student store,
We are told that Junior's tax =
Junior takes two pieces for himself for every five pieces the student buys.
If his friend George bought 35 pieces of candy, how many pieces will go to Junior?
The tax is represented as :
Junior : George
2 : 5
Hence:
2/5 = x/35
Cross Multiply
5x = 2 × 35
x = 70/5
x = 14
Hence, if George buys 35 pieces of candy, 14 pieces of candy goes to Junior
Which is the simplified form of the expression
((2^-2)(3^4))^-3 •((2^-3)(3^2))^2
(please be quick!)
Answers
A
Correct me if I’m wrong
Monique is 16 years old and her brother is 4 years old. What is her brother's age in terms of Moniques age x in years?
Answers
Answer:
28
Step-by-step explanation:
M=16
Bro=4
Monisque will be 28 years when her brother is 16
At a planetarium, adult tickets cost $2.50 each and children’s tickets cost $1.50 each. One day 408 tickets were sold in all, and $733 was collected from ticket sales. How many of each type of ticket were sold?
Answers
Step-by-step explanation:
the answer is 2.50+1.50+733=737
At 2 pm on Tuesday, the temperature was -12 degrees. By 6 pm the temperature had dropped to -20 degrees. What was the average change in temperature each hour?
Answers
Answer:
a
Step-by-step explanation:
72.50 she worked 5 hours. If she was paid the same hourly wage, how many hours will see have to work to get 232.00
Answers
Answer:
16 hrs
Step-by-step explanation:
per hour she gets 72.50 / 5 or 14.50
so t * 14.5 = 232
t = 232 / 14.5
t = 16 hours
7e4t + 200 = 2e4t +1500
Answers
-2e4t on both sides
5e+200=1500
-200 on both sides
5e=1300
divide 1300 by 5
e=260
Select all that apply. There are 11 boys and 15 girls in a class. Which of the following show the ratio of girls to boys? 15.15
Answers
Answer:
15:11
Step-by-step explanation:
well, girls to boys would be 15 to 11 because there are 15 girls and 11 boys. it cant be simplified further, so its 15:11
edit: I've noticed that it sounds like I'm saying girls is first because there are more, but it's because the question asks for girls to boys, not because there are more girls
Answer:
11:15
Step-by-step explanation:
Finding a ratio is very simple, all you have to do is take the first number, put a :, and then put the second number.
The : can also be replaced with a . or / so the answer to this question might also be seen as:
11/15
11.15
I NEED HELP A.S.A.P.
Answers
Subtract 5 from both sides
6x> -13 -5 or -10x + 3 > -27
Subtract 5 from - 13
6x > - 18 or -10x + 3 > - 27
Divide each term in 6x > - 18 by 6
6x/6 > -18/6 or -10x +3 > - 27
x > - 18/6 or -10x + 3 > -27
x > - 3 or -10x + 3 > -27
Sutract 3 from both sides of the inequality
x > - 3 or 10x > - 27 -3
x > -3 or 10x > -30
Divide each term in -10x > - 30 by - 10
x > -3 or 10x/-10 < -30/-10
x > -3 or x < 3
Solve this system of linear equations. Separate
the x- and y-values with a comma.
17x = 43 - 15y
8x
-68 + 15y
Enter the correct answer.
DONE
?
Answers
Answer:
5x
Step-by-step explanation:
im not to sure tbh
prove how triangle ABE is congruent to triangle DCE
Answers
Answer:
The triangle ABE and DCE are congruent because they are the same size and same shape meaning they are congruent.
Step-by-step explanation:
For two figures to be congruent they must be the same size and shape or one could mirror the other since they mirror each other and are the same size and shape they are congruent.
please leave an explination ( step by step pleas!)
Answers
Answer:
y = 2/7x
General Formulas and Concepts:
Algebra I
Slope-Intercept Form: y = mx + b
m - slope b - y-interceptStep-by-step explanation:
Step 1: Define
Slope m = 2/7
y-intercept b = 0
Step 2: Write equation
Substitute [Form]: y = 2/7x + 0Simplify: y = 2/7xExplanation: Slope-intercept form is y=mx+b the m meaning slope and the b meaning y-intercept, so by plugging in the variables in slope-intercept form it's y=2/7x+0; since the y-intercept is 0 it doesn't need to be in the equation so it's y=2/7x
Find the perimeter and area of the figure if each unit on the graph measures 1 centimeter. Round answers to the nearest tenth, if necessary.
Answers
The perimeter and area of the rectangle shown are 22 centimeters and 30 centimeters square respectively.
How to determine the valueFrom the diagram shown, we have that the each point measures 1 centimeter
The length of the rectangle measures 5 pints which is 5 centimeters
The width of the rectangle measures 6 points which is 6 centimeters.
The formula for perimeter of a rectangle is expressed as;
Perimeter = 2 ( length + width)
substitute the values into the equation
Perimeter = 2 ( 5 + 6)
Perimeter = 2(11)
Perimeter = 22 centimeters
Area = length × width
Area = 6 × 5
Area = 30 centimeters square
Thus, the perimeter and area of the rectangle shown are 22 centimeters and 30 centimeters square respectively.
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Can you have a triangle with sides 10, 11, and 12?
Answers
Answer:
I think yeah, triangle with this side are possible.
Answer:
I don think so they only have 3 sides so I think the answer is no
Step-by-step explanation:
please mark brainliest ☺♦