The data in the following table show the amount of water in milliliters a professional tennis player loses for various times, in minutes, of play during a tennis match.

Time of Workout

(in minutes), x 10 20 30 40 50 60

Water Lost

(in milliliters), y 600 900 1,200 1,500 2,000 2,300

(a)

Use the points

(10, 600)

and

(60, 2,300)

to find a linear model that will predict the water lost y (in mL) by a player who has been playing for x minutes.

y =




(b)

Use your linear model to estimate the amount of water lost (in mL) by a player who has been playing for 25 minutes.