Question

Persamaan Garis yg sejajar dengan garis 2x +3y+6=0 dan melalui titik -2,5 adalah.

Answer 1

Koef. x × x = 2 × -2 = -4
Koef. y × y = 3 × 5 = 15

2x + 3y - ( -4 + 15 ) = 0
2x + 3y - 11 = 0

Answer 2

Gradien(m) sejajar dr persamaan = -a/b = -2/3

pers.grs.melalui ttk.(-2,5) :
y-y1 = m(x-x1)
y-5 = -2/3 (x+2)
3(y-5) = -2(x+2)
3y-15 = -2x-4
atau
2x+3y-11 = 0 atau 2x+3y = 11