persamaan garis yg melalui titik (4,-6) m=3 1/2

y-y1 = m (x-x1)
y - (-6) = 7/2 (x-4)
--------------------------- x 2
2y + 12 = 7 (X-4)
2y + 12 = 7x - 28
-7x + 2y +12 - 28 = 0

>>-7x + 2y - 16 = 0
semoga membantu:))