WeBWorK using host: https://webwork-ptx.aimath.org, format: simple seed: 107

The axis of symmetry of $y=ax^2+bx$ is shifted horizontally, compared to the basic parabola.

The $x$ -coordinate of the vertex is the average of the $x$ -intercepts.

The $y$ -coordinate of the vertex is the same as the $y$ -intercept.

We can use extraction of roots to solve $ax^2+bx=0\text{.}$