Question

What is the axis of symmetry and vertex for the graph `y = 2x^2 − 24x + 80`?

Answer 1

Vertex (6, 8)

Explanation:

x-coordinate of vertex, and of the axis of symmetry:
`x = -b/(2a) = 24/4 = 6`
y-coordinate of vertex:
y(6) = 2(36) - 24(6) + 80 = -72 + 80 = 8
Vertex (6, 8)