Constant of Proportionality

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

• y
• x
• 14

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

What is the constant of proportionality for this table?

• 1/9
• 9
• 8

Write an equation for this situation.

• y=9.75x
• y=19x
• y=19.25x
• y=9.5x

Write an equation for this relationship.

• y=18x
• y=18.50x
• y=22.50x
• y=22x

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? 

• $37
• $64.75
• $9.25
• $18.50

If Reynaldo saves $48 in 8 days, how much could he save in two weeks?

• $102
• $84
• $56
• $6

If Justin ordered 5 ice cream bars for $12.25, how much was each ice cream bar?

• $2.45
• $4.00
• $7.25
• $1.25

1. A parking lot has 3 cars and 12 trucks. Find the ratio of cars to trucks. Select all the true ratios.

• 3 trucks : 12 cars.

• 3 cars to 12 trucks

• $\frac{3\ cars}{12\ trucks}$

• 3 cars to 12 trucks

What is a Ratio?

• Is a comparison of two quantities 
• A rate with a denominator of one
• It is when the only factor the numerator and denominator share is a one 
• Two decimals that can be multiplied