Answer:
y=-3x+4
Step-by-step explanation:
m=(y2-y1)/(x2-x1)
m=(-8-7)/(4-(-1))
m=-15/(4+1)
m=-15/5
m=-3
y-y1=m(x-x1)
y-7=-3(x-(-1))
y-7=-3(x+1)
y=-3x-3+7
Answer:f=-1
He would have to make 8 mini pies
x+1
x * 2 -3 - x + 4 =
2x - 3 - x + 4
x - 3+4 = x+1