5-5: Proportional & Nonproportional Relationships

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y = 28x

On a road trip, a car can travel 28 miles for each gallon in the tank. Find the constant of proportionality to write an equation relating miles to gallons.

308 miles

On a road trip, a car can travel 28 miles for each gallon in the tank. How far can the car travel on 11 gallons?

392 miles

On a road trip, a car can travel 28 miles for each gallon in the tank. How far can the car travel on 14 gallons?

A.

Which table does NOT represent a proportional relationship?

y = 0.9x

The cost of downloading music is $0.90 per song. Find the constant of proportionality to write an equation relating cost to number of songs.

$11.70

The cost of downloading music is $0.90 per song. What is the cost for downloading 13 songs?

$4.50

The cost of downloading music is $0.90 per song. What is the cost for downloading 5 songs?

y = 0.55x

Use the constant of proportionality as the amount of money raised relates to the number of snacks sold, to write an equation.

y = 0.08x

Use the constant of proportionality as y relates to x to write an equation.

y = 0.5x

Use the constant of proportionality as y relates to x to write an equation.

y = 0.75x

Use the constant of proportionality as y relates to x to write an equation.

y = 2.5x

Use the constant of proportionality as y relates to x to write an equation.

y = 25x

Use the constant of proportionality as y relates to x to write an equation.

y = 3.5x

Use the constant of proportionality as y relates to x to write an equation.

y = 4x

Use the constant of proportionality as y relates to x to write an equation.

y = 5.5x

Use the constant of proportionality as y relates to x to write an equation.

y = 9x

Use the constant of proportionality as y relates to x to write an equation.

k = 9

What is the constant of proportionality (y/x) ?

k = 3.50 or 7/2

What is the constant of proportionality for c/p?

Not Proportional

What is the constant of proportionality for y/x?

k = 0.8 or 4/5

What is the constant of proportionality for y/x?

k = 1.2 or 6/5

What is the constant of proportionality for y/x?

k = 1.25 or 5/4

What is the constant of proportionality for y/x?

k = 1.5 or 3/2

What is the constant of proportionality for y/x?

k = 2

What is the constant of proportionality for y/x?

k = 2.5 or 5/2

What is the constant of proportionality for y/x?

k = 3

What is the constant of proportionality for y/x?

k = 4

What is the constant of proportionality for y/x?

k = 5

What is the constant of proportionality for y/x?

k = 7

What is the constant of proportionality for y/x?

k = 12

What is the constant of proportionality y/x?

k = 12.5 or 25/2

What is the constant of proportionality y/x?


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