$\"\"$

\

The function is $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

Take square root on each side.

\

$\"\"$

\

$\"\"$

\

Solutions are $\"\"$ $\"\"$

\

$\"\"$ $\"\"$

\

The function is $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

Solution is $\"\"$ .

\

$\"\"$

\

$\"\"$ $\"\"$

\

The functions are $\"\"$ and $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$ or $\"\"$

\

Solutions are $\"\"$ .

\

$\"\"$

\

$\"\"$ $\"\"$ .

\

The function $\"\"$ .

\

$\"\"$

\

To solve the above inequality graph the related quadratic equation $\"\"$ .

\

Find the intercepts.

\

Find the $\"\"$ -intercept by substituting $\"\"$ in $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

The $\"\"$ -intercepts are $\"\"$ , $\"\"$ .

\

Find the $\"\"$ -intercept by substituting $\"\"$ in $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$ -intercept is $\"\"$ .

\

$\"\"$

\

Find the vertex of above quadratic function $\"\"$ .

\

$\"\"$

\

Compare with $\"\"$ .

\

$\"\"$ , $\"\"$ and $\"\"$ .

\

Since $\"\"$ , then the parabola open downward.

\

$\"\"$

\

$\"\"$ coordinate of vertex is $\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

Vertex $\"\"$ .

\

$\"\"$

\

Graph:

\

Draw the coordinate plane.

\

Plot the intercepts and vertex.

\

Connect the plotted points.

\

$\"\"$

\

Since the inequality symbol is $\"\"$ , the solutions $\"\"$ are not included in the solution of the inequality.

\

The graph is above the $\"\"$ -axis between $\"\"$ or $\"\"$ .

\

The inequality solution set is $\"\"$ .

\

\

$\"\"$ $\"\"$

\

The function is $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

The inequality solution set is $\"\"$ .

\

$\"\"$ $\"\"$

\

The functions are $\"\"$ and $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

To solve the above inequality graph the related quadratic equation $\"\"$ .

\

Find the intercepts.

\

Find the $\"\"$ -intercept by substituting $\"\"$ in $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$ or $\"\"$

\

The $\"\"$ -intercepts are $\"\"$ , $\"\"$ .

\

Find the $\"\"$ -intercept by substituting $\"\"$ in $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$ -intercept is $\"\"$ .

\

$\"\"$

\

Find the vertex of above quadratic function $\"\"$ .

\

$\"\"$

\

Compare with $\"\"$ .

\

$\"\"$ , $\"\"$ .

\

Since $\"\"$ , then the parabola open upward.

\

$\"\"$

\

$\"\"$ coordinate of vertex is $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

Vertex $\"\"$ .

\

$\"\"$

\

Graph:

\

Draw the coordinate plane.

\

Plot the intercepts and vertex.

\

Connect the plotted points.

\

\

Since the inequality symbol is $\"\"$ , the solutions $\"\"$ or $\"\"$ are not included in the solution of the inequality.

\

The graph is above the $\"\"$ -axis $\"\"$ between $\"\"$ and $\"\"$ .

\

The inequality solution set is $\"\"$ .

\

$\"\"$ $\"\"$

\

The function $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

To solve the above inequality graph the related quadratic equation $\"\"$ .

\

Find the intercepts.

\

Find the $\"\"$ -intercept by substituting $\"\"$ in $\"\"$ .

\

$\"\"$

\

$\"\"$

\

The $\"\"$ -intercepts are $\"\"$ ,

\

Find the $\"\"$ -intercept by substituting $\"\"$ in $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$ -intercept is $\"\"$ .

\

$\"\"$

\

Find the vertex of above quadratic function $\"\"$ .

\

$\"\"$

\

Compare it to $\"\"$ .

\

$\"\"$ , $\"\"$ .

\

Since $\"\"$ , then the parabola open downward.

\

$\"\"$

\

$\"\"$ coordinate of vertex is $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

Vertex $\"\"$ .

\

$\"\"$

\

Graph:

\

Draw the coordinate plane.

\

Plot the intercepts and vertex.

\

Connect the plotted points.

\

$\"\"$

\

\

The inequality solution set is $\"\"$ .

\

$\"\"$

\

$\"\"$ . Solutions are $\"\"$

\

$\"\"$ . Solution is $\"\"$ .

\

$\"\"$ .Solutions are $\"\"$ .

\

$\"\"$ . The inequality solution set is $\"\"$ .

\

$\"\"$ .The inequality solution set is $\"\"$ .

\

$\"\"$ . The inequality solution set is $\"\"$ .

\

$\"\"$ . The inequality solution set is $\"\"$ .