Question

Find the equation of the quadratic function with zeros 10 and 12 and vertex at (11, -2).

Answer 1

a) y = 2x^2 - 44x + 120

b) y = 2x^2 - 44x - 240

c) y = 2x^2 - 44x + 240

d) y = -2x^2 - 44x + 240

Is it a?

Answer 2

a definately not. . coz when u plz x=10 in it . . y is not=0

Answer 3

then which one... I'm lost.

Answer 4

c or d

Answer 5

oops sorry it's c :)

Answer 6

look 2(100)-44(10)+240=0
so ans=c

Answer 7

Oh right, thank you!