Chapter 11: Quadratics

If $(2,8)$ is the vertex of a graph of a quadratic function f(x), then the equation for the axis of symmetry is:

The vertex of the graph of $y=5(x+9)^{2}-4$ is:

The stretch of the graph of $y=5(x+9)^{2}-4$ is:

The graph of $y=5(x+9)^{2}-4$ opens

How many real solutions does $x^{2}+10x+25$ have?

The graph of $y=-x^{2}+9$ opens upward.

The y-intercept of $y=x^{2}-7x+12$ is $12$.

The discriminant of $x^{2}+5x+4=0$ is $9$.

The vertex of the graph of $y=2|x+3|-6$ is $(-3,-6)$.

If a quadratic equation can be solved by factoring, then its discriminant is a perfect square.