Dependent and Independent Variables Topic Review

Jerry types 71 words per minute.

Write an equation to determine the amount of time it would take to type a given number of words.

• y=71+x

• y=71x

• y=x÷71

• y=x-71

Jerry types 71 words per minute.

How long would it take Jerry to type 2556 words?

_ minutes

Jerry types 71 words per minute.

If Jerry typed for 20 minutes, how many words did he type?

_ words

A hiker is climbing at a constant rate of 1.8 miles per hour.

If d represents the distance the hiker climbed and h represents the time in hours, write an equation to model the relationship between them.

• d=h-1.8

• d=h÷1.8

• d=1.8+h

• d=1.8h

A hiker is climbing at a constant rate of 1.8 miles per hour.

How much time would it take for the hiker to climb 10 miles?

_ hours

(round to the nearest hundredth)

A hiker is climbing at a constant rate of 1.8 miles per hour.

 How many miles will he hike in 2.5 hours?

_ miles

The graph shows the relationship between the distance a professional biker is traveling and the time in hours.

If he hikes for 5 minutes, he will travel _ miles.

The graph shows the relationship between the distance a professional biker is traveling and the time in hours.

How many minutes does it take him to hike 3 miles? _ minutes

A robot sorts 20 pencils into separate colors in a minute.

Write an equation to determine the amount of time it would take to sort a number of pencils.

• y=x÷20

• y=20x

• y=20-x

• y=20+x

A robot sorts 20 pencils into separate colors in a minute.

How long would it take the robot to sort 950 pencils?

_ minutes