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) = 3x2 - 12x + 8

Question

A. vertex: (2, -4)
axis of symmetry: x = 2
x-intercepts:  and 
y-intercept: 8
domain: (-?, ?); range: [-4, ?)
 
B. vertex: (-4, 2)
axis of symmetry: x = -4
x-intercepts: none; y-intercept: 
domain: (-?, ?); range: [2, ?)

C. vertex: (-2, -4)
axis of symmetry: x = -2
x-intercepts:  and 
y-intercept: 8
domain: (-?, ?); range: [-4, ?)
 
D. vertex: (-3, -2)
axis of symmetry: x = -3
x-intercepts: -3 + 2 and -3 - 2
y-intercept: 
domain: (-?, ?); range: [-2, ?)
 

Answer 1

Answer: A