Question

The slope of the line below is -4. Use the coordinates of the labeled point to find a point-slope equation of the line.

Answer 1

Point slope form says the line with slope m through point (a,b) is

y - b = m(x - a)

Here m-4 and (a,b)=(4,-9) so our line is

y + 9 = -4(x - 4)

which is

Answer: B