At the beining, he has 76
that is at x=0
y=mx+76
find m
given
when x=2, y=100
find m
100=2m+76
minus 76 both sides
24=2m
divide both sides by 2
12=m
the equatin is
y=12x+76
-7>-63 because the more negative the number the less the value
525/2 is the answer to your question. which may be a little bit of a larger fraction than normal
