Proportional Relationships

Proportional Relationships

7th Grade

7 Qs

quiz-placeholder

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Proportional Relationships

Proportional Relationships

Assessment

Quiz

Mathematics

7th Grade

Medium

Created by

Jamie Doby

Used 34+ times

FREE Resource

7 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Determine the constant of proportionality in the following equation:

y = 8x

8

18

8x

Answer explanation

k is being multiplied by x. Since 8 is the coefficient in the equation, 8 is the constant of proportionality, or k.

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Determine k using the table.

k = 35

k = 30

k = 3.5

Answer explanation

Take an ordered pair from the table and plug each coordinate (x and y) into the formula for k.

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Which of the following equations best represents this table?

35 = 1x

y = 35x

y = 3.5x

Answer explanation

Take an ordered pair from the table and plug each coordinate (x and y) into the formula for k.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A restaurant has an all-you-can-eat buffet for $13.95 per person. What is the rate of proportionality?

$139.50

$13.95

It depends on how many people are at the table

Answer explanation

What are they charging per person? If they have 2 people, they would charge them 2 times that number. Etc, etc.

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Use the table to determine the constant of proportionality, k.

380

188

95

Answer explanation

Determine k by dividing each y by the corresponding x.

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Which equation best represents the graph?

y = 50x

y = 75x

x = 75y

y =25

Answer explanation

Find 2 points on the graph that cross at exact points. Take each ordered pair's y and divide it by the ordered pair's x. This is your k.

The formula for the equation is y = kx. You plug in the number you found to represent k FOR k in the equation y = kx.

The points seen are (2 , 150) and (4 , 300).

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Which equation best represents this graph?

y = 50x

x = 25y

y = 25x

x = 50y

Answer explanation

Find a point on the graphed line. Divide y by x to find k. Plug k into the formula y = kx.