Graph the quadratic function. Determine the vertex, find the equation of the axis of symmetry, find any x- and y-intercepts, and state the domain and range in interval notation.f(x) = x2 - 8x

Question

A. vertex: (-4, 16)
axis of symmetry: x = -4
x-intercept: none; y-intercept: 32
domain: (-?, ?); range: [16, ?)
 
B. vertex: (4, 16)
axis of symmetry: x = 4
x-intercept: none; y-intercept: 32
domain: (-?, ?); range: [16, ?)

C. vertex: (-4, -16)
axis of symmetry: x = -4
x-intercepts: 0 and -8; y-intercept: 0
domain: (-?, ?); range: [-16, ?)
 
D. vertex: (4, -16)
axis of symmetry: x = 4
x-intercepts: 0 and 8; y-intercept: 0
domain: (-?, ?); range: [-16, ?)
 

Answer 1

Answer: D