Proportionality

In what form is the equation of a proportional relationship?

• y = mx + b

• y = kx

The constant of proportionality can also be called the...

• Equation of a proportional relationship

• Unit Rate

• Origin

• Y-intercept

Which best describes the graph represented in this table?

•  proportional
• non-proportional

Solve the proportion.

• p=31.3
• p=308
• p=924
• p=532

What is the constant of proportionality?

• 7
• 3.3
• 3/10
• 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

Write an equation for this situation.

• y=9.75x
• y=19x
• y=19.25x
• y=9.5x

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

• $102
• $84
• $56
• $6

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

• $2.45
• $4.00
• $7.25
• $1.25