Write a function representing the line that includes the points (3,3) and (-6, 15)

Answer 1

slope = (15-3)/(-6-3) = 12/-9 = -4/3

y - 3 = (-4/3)(x-3)
3y - 9 = -4x + 12
4x + 3y = 21

Answer 2

Find the slope and then solve for y=mx+b