U5 PA Test Review Proportional vs not

Identify the constant of proportionality.

k = ?

What does the slope of the graph represent?

• height grown

• inches per year

• age of the tree

• speed of aging

Write an equation of the line, y=mx, where m is the slope of the line.

• y=5x

• y=10x

• y=30/2x

• y=1x

Write the equation of the graph.

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The distance a motorcycle drives varies directly with the number of hours driven at a constant rate. A biker travels 672 miles in 8 hours. If the biker continues to travel at this same rate, how long will it take the person to travel 1260 miles?

• 8 hours

• 84 hours

• 157.5 hours

• 15 hours

A truck went 216 miles and used 15 gallons of gas. If the same truck went 792 miles at the same rate, how many gallons of gas would be used?

• 55 gallons

• 50 gallons

• 47 gallons

• 158.4 gallons

Organize these options into the right categories

Groups:

(a) Proportional

,

(b) Non-Proportional

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Organize these options into the right categories

Groups:

(a) Function

,

(b) Not a Function

• (2, -2) (5, 9) (5, -7) (1, 4)

• (2, -2) (5, 9) (7, -7) (-1, 4)

• (-9,5) (10,5) (-9,-5) (10,-5)

• 
  (6,-5) (7, -3) (8, -1) (9, 1)

Which mapping diagram does NOT show y as a function of x?

• A

• B

• C

• D