Proportional Graphs Equations

Use the graph to determine an equation to represent the relationship. Use t for minutes (time), and m for miles.

• 5t = m

• 5m = t

Use the table to solve for the constant of proportionality.

• 3

• 6

• 2

Look at the graph, which ordered pair represents the unit rate?

• (0, 0)

• (1, 0.75)

• (4, 3)

• (8, 6)

Which graph would represent a proportional relationship?

• Graph A

• Graph B

• Graph C

• Graph D

The cost for 2 lbs of apples is $1.84. Reduce the ratio to determine the equation, where x is the lbs of apples and y is the cost.

• y = .92x

• x = .92y

• y = 2x

• y = 1.84x

Use the graph to determine how many pounds of chicken salad you can buy for $52.50.

• 5 lbs

• 6 lbs

• 7 lbs

• 8 lbs

Use a point on the graph to reduce to the unit rate.

• $7.50 per pound of chicken salad

• $1 per pound of chicken salad

• 7.5 pounds of chicken salad per dollar

• $15 for 2 pounds of chicken salad

Determine the constant of proportionality for the table. Express your answer as y = kx

• y = 1/2x

• x = 1/2y

• y = 2x

• k = x

Identify the constant of proportionality.

• k = 2x

• k = 2

• k = 4

• none (not proportional)

Identify the constant of proportionality.

• k = 5

• k = 1/5

• k = 1

• k = 2.5

• none (not proportional)