Constant of Proportionality In Words
Constant of Proportionality Equations
100

Jude sends 45 E-mails in 15 minutes.

How many E-mails did he send per minute?

He sent 3 E-mails per minute.

100

Navelle earns $12 per hour. Write an equation that represents Navelle's earnings.

y = 12x

200

Lenasia earned $640 in a 40-hour work week.

What is Lenasia's hourly rate of pay?

Lenasia earns $16 per hour.

200

Gianna reads 27 pages in 9 minutes. At What rate does Gianna read?

Write an equation for this relationship. 

Gianna reads 3 pages per minute.

y = 3x

300

A helicopter propeller spins 2400 revolutions in 4 minutes. What is the constant of proportionality (k), in revolutions per minute?

The constant of proportionality is k = 600 RPM.

300

Maxine works at law office. the equation y = 135x represents her earnings.Determine how much money she makes if she works 40 hours.

Maxine earns $5,400 in 40 hours.

400

Jeff earned $400 working a 40-hour work week.

Find Jeff's hourly wage and use it to predict how much he will make if he works for 47 hours.

Jeff makes $10 per hour and would make $470 IN 47 hours.

400

The equation y = 55x represents the rate of the Long Island highway speed limit, in miles per hour. Let x represent the number of hours driven and y represent the total miles driven.

How long was Francis driving if he drove 247. 5 miles at the speed limit.

Francis drove for 4.5 hours.

500

Janine sells 16 apples for $8.00. What is the unit price for each apple?  

How much would she earn if she sold 64 apples?

The unit price is $0.50 per apple. 

Janine would earn $24 for selling 64 apples.

500

If Jackson ate hamburgers at a rate of 3.5 hamburgers per minute and Jacen ate hamburgers at a rate of 4.7 hamburgers per minute, write an equation that could represent how many more hamburgers Jacen can eat more than Jackson.

y = 1.2x

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