Question

Which equation represents a graph with a vertex at (-1,6)?

Answer 1

B.
`y = 3x^2 -6x -3`

Explanation:

Well, we can use the following formula to find the x coordianate of the vertex -b / 2a.

So let’s start with a)

-6 / 6

-1

A. is wrong because its vertex starts with -1.

b)

6 / 6

1

now that we have our x coordinate we can plug it into the equation to get our y.

3 - 6 - 3

So the y coordinate is -6.

Hence, the answer choice B.
`y = 3x^2 -6x -3`

look at the image below.