For point-slope form, we have
y - y1 = m(x - x1) where m is the slope and (x1, y1) the given point
y - (-6) = (-3/4) (x - 2) simplify
y + 6 = (-3/4)x + 3/2 subtract 6 from both sides
y = (-3/4)x + 3/2 - 6 (6 = 12/2)
y = (-3/4)x + 3/2 - 12/2
y = (-3/4)x - 9/2