Question

The line of symmetry for the quadratic equation y = ax^2 - 8x - 3 is x = 2. What is the value of "a"?

2?

Answer 1

hint-
(2,0) lies on the quadratic equation

Answer 2

-2?

Answer 3

dont think 19/3 is the answer
its either 2, -2 and -1

Answer 4

nope pls try again buddy... :)
go step by step.... .

Answer 5

plugin y=0, x = 2

0 = a(2^2) - 8(2) - 3

0 = 4a-16-3

0 = 4a-19

19 = 4a

19/4 = a

Answer 6

check ur process again @ineedhelpplease57

Answer 7

ok..

Answer 8

did u get the mistake?

Answer 9

yes