Question

Tentukan persamaan garis melalui titik 1 , -7 dan sejajar dgn persamaan garis 2x - y + 3 = 0

Answer 1

2x - y = 3
y = 2x - 3
m = 2
Sejajar, artinya m1 = m2 = 2
Persamaan garisnya,
y - b = m(x - a)
y + 7 = 2(x - 1)
y + 7 = 2x - 2
y = 2x - 9

Answer 2

Y=2x-3
m1=m2= 2 krn sejajar
y-y1=m(x-x1)
y+7=2(x-1)
y+7=2x-2
9=2x-y atau 2x-y-9=0