EXPLANATION
Given the table, we can see that the storm will have a rate of 3 inches per hour, so the slope will be m=3
The equation will be:
 y = 3x without y-intercept
Let's build the table:
 x 0 1 2 3 4 
y=3x 3*0=0 3*1=3 3*2=6 3*3=9 3*4=12
Now, we need to graph the function.