Answer
Vertex: (-2,8)
x-intercepts: 2, -6
y-intercept: 6
Maximum value of f is 8
Domain is all real numbers and range is from (-infinity, 8]
Work Step by Step
From the graph:
vertex of parabola is (-2,8)
x-intercepts are (2,0) and (-6,0)
y-intercept is (0,6)
Since vertex at (-2,8) and parabola opens downward, maximum value is 8.
Domain is all real numbers and range is from (-infinity, 8] as seen on the graph
