Write an equation relating the variables .

Question

A bathtub is being filled at 2.5 gallons per minute . The bathtub will hold 20 gallons of water . 

Answer 1

Time will be the independent variable x

Gallons will be the dependent variable y

 

 

y = 2.5x + 20

 

We put +20 at the end of the equation because the tub already holds 20 gallons of water.