Persamaan garis yang melalui titik p(-9,-4) dan bergradien 2/3

Bab Persamaan Garis
Matematika SMP Kelas VIII

y - y1 = m (x - x1)
y - (-4) = (2/3) . (x - (-9))
3 (y + 4) = 2 (x + 9)
3y + 12 = 2x + 18
2x - 3y + 18 - 12 = 0
2x - 3y + 6 = 0

(-9,-4) m = 2/3  jawab: y-y1=m (x-x1)           y-(-4)=2/3 (x- (-9)                                                                       3y+12=2x+18                                                                                                        -2x+3y=18-12                                                                       -2x+3y=6                                                                        2x-3y=-6