91Ó°ÊÓ

Graph the equation.

Describe and correct the error in the given statement.

The relation $\left(1,-5\right),\left(2,-5\right),\left(3,6\right),\left(4,11\right)$ is not a function because the inputs 1 and 2 are both paired with the output $-5$.

Graph the equation.

Write an inequality represented by the graph.

Identify the domain and range of the relation.

$\left(-2,5\right),\left(-1,2\right),\left(0,4\right),\left(1,-9\right)$

Graph the equation.

$y=\frac{1}{2}x+1$.

Graph the equation.

$y=2$.

Identify the domain and range of the relation.

$\left(7,3\right),\left(7,6\right),\left(7,9\right),\left(3,3\right),\left(3,6\right)$

Graph $y=-1$ and $x=4$. Tell whether each equation is a surface.

Solve the inequality. Graph the solution.