Question

Given the above graph of y=-a(x+2)(x-6), where a>0,

(a) write down the equation of the line of symmetry,
(b) find the value of a. ​

Answer 1

a)line x=2
b)a=3/2

Explanation:

a) line of symmetry= x1 + x2/2=(-2)+6/2=2

b) (0,18)---y=-a(x+2)(x-6)

18=-a(0+2)(0-6)

a=18/12

a=3/2