Question

What is the axis of symmetry and vertex for the graph `y = 3x^2 + 24x - 1`?

Answer 1

`Vertex (-4, -49)`

Explanation:

x-coordinate of vertex, or axis of symmetry:
`x = -b/(2a) = - 24/6 = -4`
y-coordinate of vertex:
`y(-4) = 3(16) - 24(4) - 1 = 48 - 96 - 1 = -48 - 1 = -49`
Vertex (-4, -49)