Graph each quadratic equation by finding and plotting ordered pair solutions.
$y=-3x^2$

Determine if the parabola opens up or down.

$y=-2x^2-6x-7$

Determine if the parabola opens up or down.

$y=\frac{1}{2}{x}^2-5x$

Graph each quadratic equation by finding and plotting ordered pair solutions.

$y=2x^2+5$

Graph the following quadratics and state its vertex and intercepts.

$y=x^2-2x-3$

Graph the following quadratics and state its vertex and intercepts.

$y=-3x^2+10x-3$

Graph the following quadratics and state its vertex and intercepts.

$y=4x^2-8x+5$