Linear Proportional

What is the constant of proportionality for the relationship on the graph?

• 3.5

• 7

• 8

• 28

What is the unit price for a piece of cheese if 1.24 pounds costs $11.25?

• $0.11 per lb

• $9.07 per lb

• $12.49 lb

• $13.95 per lb

An electrician charges $25 to make a house call, plus $40 for every hour of work. Which equation shows how to find C, the total cost for having the electrician work for h hours?

• C = 25 + 40h

• C = 65 + h

• C= 65h

• C = 25h + 40

Harriet uses 3/4 of a cup of brown sugar per batch of cookies she makes. Which graph shows the relationship between the batches of cookies (x) and the cups of brown sugar needed (y)?

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• 
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Sally will earn $30 for every 5 hours that she babysits. Which of the following equations can be used to represent the proportional relationship?

• y = 1/6x +30

• y = 6x

• y = 5x + 6

• y = 6x +5

Proportional relationships must go through the origin. (0,0)

• True

• False

What is the rate of change for the following graph?

• 80

• 20

• 40

• 160

Which line shows a proportional relationship between x and y?

• Line L

• Line M

Which situation is best described by the graph shown?

• JJ purchases chips for $0.75 per bag.

• Mark buys packs of gum for $1.50 each.

• Paula pays $0.50 per ticket at the fair.

• Franco purchases flowers for $3.00 each.

Find the constant of proportionality for the graph.

• 9

• 4

• 3

• 1.5