tentukan persamaan garis yg melalui pasangan tigik titik (-1,3) dan (4,7)

(y-y1)/(y2-y1) = (x-x1)/(x2-x1)
(y-3)/(7-3) = (x-(-1) / 4-(-1)
(y-3)/4 = (x+1) / 5
4(x+1) = 5(y-3)
4x + 4 = 5y - 15
4x - 5y + 4 + 15 = 0
4x - 5y + 19 = 0

m = y2 - y1 / x2- x1
7 - 3 /4 - (-1)
4 / 5
rumus y-y1 = m (x-x1)
y - 3 = 4/5 (x +1)
y-3 = 4/5 x + 4/5
y - 4/5 x = 4/5 + 3
y - 4/5 x = 4