Question

Write a equation that can be used to find y, the number of gallons water used for showering for x minuets

Answer 1

y = 6x

Explanation:

To write an equation, find the unit rate or constant of proportionality (k).

Using a point on the line, (3, 18):

Constant of proportionality, k = y/x = 18/3

k = 6

To write an equation, substitute k = 6 into y = kx.

Thus:

y = 6x