You can
put this solution on YOUR website!It's really easy you know that the slope = 3
And you have to find b
So from the points pick the values In y=mx+b
m = 3, y = 0, x = -5
0=3(-5)+B
b=15
Now b = 15
Hence the equation of the slope y-intercept form is y=3x+15.
Paul.