y - y1 = m(x - x1) Point slope form
y - y1 = 4(x - x1) Plug in the given slope m = 4
y - (-10) = 4(x - 3) Plug in the given (x1,y1) point
y + 10 = 4(x - 3) Simplify
y + 10 = 4x - 12 Distribute
y+10-10 = 4x - 12 - 10 Subtract 10 from both sides
y = 4x - 22 Combine like terms
Answer is choice A