# What is the vertex, axis of symmetry, the maximum or minimum value, and the range of parabola #y=-2x^2-8x+3#?

##### 1 Answer

May 24, 2015

Vertex (x, y)

x of vertex and axis of symmetry: x = -b/2a = 8/-4 = -2.

y of vertex: y = f(-2) = -8 + 16 + 3 = 11

The vertex is a Max because the parabola opens downward (a negative).

Find x- intercepts by makingy = 0