Pre-Functions

Solve for x:

 $-6+x=-12$  

• x = -6

• x = 6 

• x = 18 

• x = -18 

What is the y-coordinate in the ordered pair (5,7)?

• 5

• 7

• 13

• 2

What is the x coordinate in the ordered pair (-5,3) ?

• -5

• 3

• 8

• -2

What is the meaning of the point (20,5)?

• If she delivers 20 newspapers, she will earn $5.

• If she earns $20, she will deliver 5 newspapers.

Does this graph represent a proportional relationship?

• Yes

• No

What are the x coordinates of these points:

(4,3)

(-7,2)

(1,-3)

• 4, -7, 1

• 3, 2, -3

• 4, 2, -3

What is the unit rate in this proportional relationship?

• 60 miles/ 1 hour

• 1 mile/ 1 hour

• 120 miles/ 1 hour

Does this graph represent a proportional relationship?

• No

• Yes

Simplify

 $\frac{14}{35}$  

• 3

•  $\frac{5}{2}$  

•  $\frac{2}{5}$  

What is a ratio?

• A comparison of two quantities.

• Rise over run

• Multiply fractions