jwb yah gaess, lgi butuh buat un mksh

y-y1 = mx(x-x1)
= y+1 = 2/3 (x-4)
=y + 1 = 2/3x - 8/3
dikali 3 smua agar bulat
= 3y + 3 = 2x - 8
= 3y - 2x = -11
dikali -1 biar pas dijawaban
= -3y + 2x = 11
2x - 3y = 11 D