Answer:
4(3 - 4x).
16x + 12 - 32x.
Step-by-step explanation:
4(3 - 4x) is one expression.
Another is 16x + 12 - 32x.
5
m = 1
slope = (y₂-y₁)/(x₂-x₁)
m = (4 - -1) / 1 - -4) = 5/5 = 1