persamaan garis g adalah... a. y = -1/2 x +4 b. y = -x + 4 c. y = -2x - 4 d.y = -2x + 3

y-y1/y2-y1 = x-x1/x2-x1
y-2/-2-2 = x-1 / 3-1
y-2/-4 = x-1/2 ----dikalikan silang
2(y-2) = -4(x-1)
2y-4 = -4x+4
4x+2y =8
2y = -4x+8 ---- dibagi 2
y = -2x+4
ada dua jawaban