Question

a sprinkler uses 3 gallons of water per minute.
y = ?x
complete the direct variation to relate gallons of water and time.

Explanation:

Step1: Understand Direct Variation

Direct variation is of the form \( y = kx \), where \( k \) is the constant of proportionality. Here, \( y \) is gallons of water, \( x \) is time in minutes, and \( k \) is the rate of water usage.

Step2: Determine the Constant \( k \)

The sprinkler uses 3 gallons per minute. So the rate \( k \) is 3. Thus, the equation is \( y = 3x \).

Answer:

3