Proportional Functions

Write an equation for this relationship.

• y=1/5x

• y=1/2x

• y=2x

• y=5x

What is the rate of change (slope) in the table?

• 45 miles/hour

• 90 miles/hour

• 135 miles/hour

• 2 miles/hour

Write an equation for this situation.

• y = x + 19.25

• y = 19.25x

Which of the following describes the slope of the relationship between dogs and paws in the table?

• m = 1/4

• m = 4

• m = 6

• m = -4

A family makes homemade pickles. They pick the pickles at a rate of 80 pickles per 5 jars. Which answer choices best represent packing y pickles in x jars at that rate? Select TWO correct answers.

Answer the following questions.

c

d

g

i

f

10,500

y = 1500x

1,500

yes

100

4500

no

y=10x

y=4500x

10

Write how to find the proportion of

2:8 :: 25:625

(Do not give space first right the means than the extremes.)

Mathematical Equivalence

ON

Which graph is not proportional?

• A

• B

• C

• D

If the line containing the points in the table is plotted on a coordinate system, what does the graph look like?

• 
• 
• 
• 

Shawn makes $7.50 an hour to babysit for her next door neighbors. What is the slope and equation for this situation?

• m = 7.50

  y = 7.50x

• m= 7.50

  y = x + 7.50

• m = 7.50

  7.50y = x

• m = 7.50

  y =7.50