Question

What is the axis of symmetry? graph of
y = 2(x – 3)2 – 7

Answer 1

whatevs

Answer 2

hey

Answer 3

Hi

Answer 4

There's probably an easier way to do this, but I usually just multiply everything all out first

Answer 5

ok

Answer 6

y = 2(x – 3)^2 – 7

y = 2(x^2-6x+9) - 7
y = 2x^2-12x + 18 - 7
y = 2x^2-12x+11

Now, in order to find the axis of symmetry, we first have to find the vertex...

x = -b/(2a)

Answer 7

12/4 = 3

Answer 8

so 3 is the vertex?

Answer 9

-(-12)/2(2) = 12/4 = 3

x = 3

Answer 10

ok

Answer 11

so the axis of symmetry should be 3 right?

Answer 12

yes

Answer 13

thanks