Answer:
y=3x-7
Explanation:
If the point given is (5, 8), and the slope given is 3 (or 3/1), then we can go backwards to find the y-intercept.
3 down and 1 left from (5, 8) is (4, 5)
3 down and 1 left from (4, 5) is (3, 2)
3 down and 1 left from (3, 2) is (2, -1)
3 down and 1 left from (2, -1) is (1, -4)
3 down and 1 left from (1, -4) is (0, -7)
If you take the slope (3) and the y-intercept (-7) and put it into slope-intercept form (y=mx+b) where m is the slope and b is the y-intercept, then you will get a final answer of y=3x-7.