Question

Garis g melalui titik (-2,1) dan (2, 5), garis h melalui titik (6, 3) dan (0, 15). jika gradien gariw g adalah m1 dan gradien garis h adalah m2, maka m1-m2 =

Answer 1

Diketahui 2 garis = y-y1/y2-y1 =

Gradien G = y-1/5-1 = x+2/2+2
= y-1/4 = x+2/4
= 4(x+2) = 4(y-1)
= 4×+8 = 4y-4
= 4×-4y = -4-8
= 4×-4y = -12
= -4y = 4× -12 ( dibagi -4)
= y = -1x+3 ( gradienya -1)

Gradien h = y-3/15-3 = ×-6/0-6
= y-3/12 = ×-6/6
= 12(×-6) = 6(y-3)
= 12×-72 = 6y-18
= 12x-6y = -18+72
= 12×-6y = 54
= -6y = -12x+54 (dibagi -6)
= y = 2×-9 ( Gradiennya 2)

m1-m2 = -1-(+2)
= -3