Proportional Relationships Study Questions

It takes 5 gallons of gas to travel 150 miles. How many miles can you travel on one gallon of gas?

• 15

• 3

• 30

• 25

Which equation does NOT represent a proportional relationship

• y=-2x

• y=0.5x

• y=3x

• y=7x+4

What is the constant of proportionality in the equation y=14x

• y

• x

• 14

In order to be proportional a graph must...

• Pass through the origin

• Be linear

• Have a constant of proportionality

• All of the above

What equation represents the relationship in the table?

• y=1/3x

• k=3

• y=3x

• k=1/3

How do you find the k-value?

• x/y

• y=kx

• xy

• y/x

If 3 pounds of apples cost $3.60, how much does one pound of apples cost?

• $1.00 per pound

• $1.20 per pound

• $3.60 per pound

• $1.10 per pound

Jasmin is baking a cake that calls for 1/4 cup water for every 1/2 cup of flour. How much flour will she need if she uses 1.5 cups of water?

• 4 cups of flour

• 3 cups of flour

• 0.75 cups of flour

• 0.25 cups of flour

If you saved for 17 weeks, how much money would you have?

• $470

• $170

• $799

• $94

The equation y=6.5x represents a proportional relationship. What is the constant of proportionality?

• x

• 1/6.5

• y

• 6.5