91Ó°ÊÓ

Evaluate the expression when $x=-5$ and $y=-7$.

$y-x+10$

Graph the equation. Tell whether the equation is a function.

$x-3y=-9$

Write the equation in function form. Then graph the equation.

Evaluate the expression when $x=-5$ and $y=-7$.

$2x^{2}y$

Tell whether the ordered pair is a solution of $y=5x-7$.

$\left(2,3\right)$

Represent the relation as a graph and as a mapping diagram. Then tell whether the relation is a function. Explain your reasoning.

$\left(0,3\right),\left(1,2\right),\left(2,-1\right),\left(4,4\right),\left(5,4\right)$

Solve the equation Check your solution.

$4\left(7-2t\right)=4$

Tell whether the ordered pair is a solution of $3x+2y=-8$.

$\left(4,-12\right)$

Identify the domain and range of the relation.

$\left(0,0\right),\left(1,2\right),\left(2,4\right),\left(3,6\right),\left(4,8\right)$

Evaluate the expression when $x=-5$ and $y=-7$.

$3x-4y$