463 is the answer because-3 m + 4 would equal 463
M= y2-y1 -7- -1
------- = _-6_ = -3/2
x2-x1 5 -1 4
My Answer for your question is
A. O
If this is the case, then you know by the polynomial remainder theorem that

is a factor of

, so there is some polynomial

such that