Quadratic Functions & Their Graphs
MATH-070
For each of the functions below, determine if they are quadratic or not and state why. If the function is
quadratic, also state:
a. Whether the parabola opens up or down, and how you know by looking at the equation.
b.
The axis of symmetry. Be sure to include the formula and show your work.
c. The vertex. Make sure to provide your algebraic work.
d. The horizontal intercept(s). Make sure to provide your algebraic work.
e. The vertical intercept.

1. f(x) = x² + 4x - 5

2.g(x) = 8 - 2x

3. h(x) = -9x² - 6x² + 1