Grade 7 Unit 5 Review

Proportions

100

True or False: 

1/2=4/8 

True!

200

6/9=7/10

False

300

True or False

2/5=9/22.5

True

400

True or False: 

15:20=16:32

False

500

DOUBLE POINTS CHALLENGER!

Solve for the unknown. 

2/7=n/21

n=6

Constant of Proportionality

100

In the equation, y=5x. What is the constant or k?

K=5

200

Solve #1 

Solve for K. Write your answer as y=kx. 

k=15

y=15x 

300

Solve #2. 

Solve for K. Write your answer as y=kx.

k=48 

y=48x 

400

Solve #6. 

Solve for K. Write your answer as y=kx.

k=214

y=214x 

500

Solve #7: 

Solve for K. Write your answer as y=kx.

k=31

y=31x

Constant of Proportionality--Part 2

100

In the equation y=14x. What is the constant or k?

k=14

200

Solve. 

k=2 

y=2x

300

Solve

k=4

y=4x

400

Solve and Graph. 

Yes it is proportional. 

k=4

y=4x

500

Solve 

The graph is proportional. 

k=50 

y=50x

Vocabulary

100

Another name for unit rate, found by setting up the ratio k=y/x

A. Table 

B. Constant of Proportionality 

C. Expression

B. Constant of Proportionality

200

In the equation y=5x, y and x are called _____________. 

A. Coefficient

B. Variable

C. Expression

B. Variable

300

In the equation y=3x, the ___________________ is 3. 

A. Coefficient

B. Variable 

C. Expression

A. Coefficient

400

A number line with two dimensions (x=horizontal axis, y=vertical axis). Intersect at (0,0). 

A. Table

B. Graph

C. Coordinate Plane

C. Coordinate Plane

500

True or False: 

Direct variation and constant of proportionality (k) all mean unit rate. 

True 

Random

100

Odd or Even?

442,421

Odd 

200

Solve for the variable: 

x+9=12

x=3

300

Solve for the variable: 

20-y=3

y=17

400

Factor pairs of 36. Prime or composite?

*Must list ALL factor pairs

1x36

2x18 

3x12

4x9 

6x6 

Composite 

500

Solve for the variable: 

6x=120 

x=20