The zeroes tell you that
y = a(x+1)(x-7)
the point tells you that
a(5+1)(5-7) = 6
so a = -1/2
y = -1/2 (x^2-6x-7) = -1/2 (x^2-6x+9-16)
y = -1/2 (x-3)^2 + 8
Find the equation, in vertex form, of the quadratic equation with zeros -1 and 7 and through the point (5,6).
please help! i'm struggling with this
1 answer