Answer:
So the equation should be in the form; y = mx + b
y = Slope + Starting Point
y = 600x + 1500
Explanation:
So since pool already contained 1500 gallons of water it will be + 1500
The starting point is where we met it which was 1500
The slope is calculated with the formula;
![(y_(2) -y_(1) )/(x_(2) -x_(1) )](https://img.qammunity.org/2020/formulas/mathematics/middle-school/36af8ro5mnxva6cdwcreylm8egzl338svb.png)
Slope:
=
= 600
So the rate of change/Slope = 600