Answer: y = (4/5)x -1
Slope-intercept form: y = mx + b
m = slope
b = y-intercept
slope = change in y/change in x
(5, 3)
(0, -1)
The change in y from up to down is -4.
The change in x from up to down is -5.
Therefore, the slope, m, is 4/5 since the two negatives cancel out to make it positive.
The y-intercept, b, is when x = 0, which is already given in (0, -1).
Now, just plug in the values:
y = (4/5)x -1