Mohon bantuannya gan..

Mohon bantuannya gan..

fungsi kuadrat menotong sumbu x di (-6,0 dan (2,0)

$y = a(x - x1)(x - x2) \ y = a(x + 6)(x - 2)$

karena melalui (1,-7) maka

$- 7 = a(1 + 6)(1 - 2) \ - 7 = a( - 7) \ a = 1$

persamaan fungsi kuadratnya

$y = (1)(x + 6)(x - 2) \ = {x}^{2} + 4x - 12$