Proportions Review - 11/28

2 apples cost $20. What will 5 Apples cost? 

• 28
• 45
• 50
• 39

Craig earns extra money as a lifeguard. He earns $37 for 4 hours and $64.75 for 7 hours.  What is the constant of proportionality (how much did he make per hour)?

• $37
• $64.75
• $9.25
• $18.50

Does the table represent a proportional relationship?

• Yes.
• No.

Which graph is proportional?

• A
• B
• C and D
• All of the graphs are proportional

What makes a graph proportional?

• Linear
• The line is only in quadrant 1
• Curvy line
• Linear and the line goes through the origin

Write an equation for this situation.

• y=9.75x
• y=19x
• y=19.25x
• y=9.5x

What is the constant of proportionality for this table?

• 1/9
• 9
• 8

Find the unit rate of 624 calories in 3 servings.

• 1,872 calories per serving
• 208 calories per serving
• 624 calories per serving
• 621 calories per serving

In the equation y = 14x, what is the constant of proportionality?

• y
• x
• 14

The distance that an automobile travels varies directly as the time it travels. If the car travels 280 miles in 7 hours, how far will it travel in 12 hours?

• 480
• 1960
• 84
• 25