persamaan garis yg sejajar dengan garis 2x+3y+1=0 melalui titik (4,5)

m = -2x/3y

y-y1 = m (x-x1)
y-5 = -2x/3y (x-4)
-------------------------×3 (agar pecahan hilang

3y-15 = -2x (x-4)
3y-15 = -2x² + 8
3y + 2x² - 15 - 8 = 0
3y + 2x² - 23 = 0