Question

If the equation of a quadratic is y = 6x2 -4x - 1, then the equation of the axis of symmetry is:



A.
B.
C. 3
D. -3

Answer 1

A. x=-1/3
B. x=1/3

Answer 2

@SACAPUNTAS

Answer 3

Do you know how to find the vertex?

Answer 4

no

Answer 5

Ok, the x coordinate of the vertex is \(\frac{-b}{2a}\)
You can plug that back in if you wanted to find the y value but in this case that's all we need because:

Answer 6

so is it in between A and B?

Answer 7

\[\frac{-b}{2a} = \frac{-(-4)}{2(6)} = \frac{4}{12} = \frac{1}{3}\]

Answer 8

its B! thnks so much