# What is the axis of symmetry and vertex for the graph #y = 3x^2 - 7x - 8#?

##### 1 Answer

Aug 24, 2016

The axis of symmetry isthe line

The vertex is

#### Explanation:

We know the shape of the graph , a parabola, in the same basic form as

The minimum point is where the gradient of the curve is 0

Differentiate

So the line

Put this x value into the original equation to find the y coordinate of the vertex