Question

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

Answer 1

`Vertex (-1/4, 25/8)`

Explanation:

coordinate of vertex, and axis of symmetry
`x = -b/(2a) = 1/-4 = -1/4`
y-coordinate of vertex:
`y(-1/4) = -2/16 + 1/4 + 3 = -1/8 + 1/4 + 3 = 25/8`
`Vertex (-1/4, 25/8)`