Answer :
y - y₁ = m(x - x₁)
y - (-4) = 1(x - (-1))
y + 4 = 1(x + 1)
y + 4 = 1(x) + 1(1)
y + 4 = -x + 1
- 4 - 4
y = -x - 3
y - (-4) = 1(x - (-1))
y + 4 = 1(x + 1)
y + 4 = 1(x) + 1(1)
y + 4 = -x + 1
- 4 - 4
y = -x - 3