titik A(1,3)dan sejajar dengan garis 3×-4y+8=0

Bab Persamaan Garis
Matematika SMP Kelas VIII

ax + by + c = 0, sejajar, (p, q)
ax + by - (ap + bq) = 0

3x - 4y + 8 = 0, sejajar, (1, 3)
3x - 4y - (3 . 1 - 4 . 3) = 0
3x - 4y - (3 - 12) = 0
3x - 4y - (-9) = 0
3x - 4y + 9 = 0