Write an equation of the parabola in intercept form that passes through (−18, 72) with x-intercepts of −16 and −2.

Respuesta :

y = a(x + 16)(x + 2)

72 = a(-18 + 16)(-18 + 2)

72 = a(-2)(-16)

72 = a(32)

[tex]\frac{72}{32} = a[/tex]

[tex]\frac{9}{4} = a[/tex]

Answer: y = [tex]\frac{9}{4}[/tex](x + 16)(x + 2)