Answer: y = 5/4x - 1 , Slope = 5/4 , y-intercept = -1
STEPS:
Use y1-y2/x1-x2 to find the slope
-1-4/0-4
= -5/-4
= 5/4 because negative divided by negative is positive
Next, use y-y1=m(x-x1) to find y-intercept
y-4=5/4(x-4)
y-4=5/4x-5
y=5/4x-1
So the y-intercept is -1