91Ó°ÊÓ

Use a graphing calculator to find the value of the following determinant.

Graph each relation or equation and find the domain and range. Then determine whether the relation or equation is a function.

$\left(3,5\right),\left(4,6\right),\left(5,-4\right)$

Solve each equation

$\left[\begin{array}{c}\text{x}+3\text{y}\\ 2\text{x}−\text{y}\end{array}\right]=\left[\begin{array}{c}−22\\ 19\end{array}\right]$

Solve each equation.52

$\left[\begin{array}{c}\text{x}+3\text{z}\\ −2\text{x}+\text{y}−\text{z}\\ 5\text{y}−7\text{z}\end{array}\right]=\left[\begin{array}{c}−19\\ −2\\ 24\end{array}\right]$

Graph each relation or equation and find the domain and range. Then determine whether the relation or equation is a function.

52. $x=-5y+2$

Find the value of each expression.

52. $\mathbf{3}\mathbf{.}\mathbf{5}\mathbf{+}\mathbf{2}\mathbf{.}\mathbf{7}$

Solve each system of equations.

$\begin{array}{c}6x−2y−3z=−10\\ −6x+y+9z=3\\ 8x−3y=−16\end{array}$

Use a graphing calculator to find the value of the following determinant.

$\left|\begin{array}{cc}6.1& 4.8\\ 9.7& 3.5\end{array}\right|$

Find each product, if possible.

52.

Find the value of each expression.

53. $\mathbf{6}\left(\mathbf{-}\mathbf{3}\right)$