After pulling the plug from a tub the amount of water in the

After pulling the plug from a tub, the amount of water in the tub changed at a constant rate of -1.7 gallons per minute.

Solution

(a.)

Solution : According to the question, the amount of water changed per minute in the tub (m) = -1.7.

In the given euqation     y = mx +b

y represents the number of gallons of water in the tub.     Thus y matches with option f.

m represents the change in the number of gallons of water in the tub each minute.     Thus m matches with option b.

x represents the number of minutes elapsed since the plug was pulled.    Thus x matches with option c.

b represents the number of gallons of water in the tub when the plug is pulled.    Thus b matches with option d.

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(b.)   Constants

      Varying

m,b.