Multiple Choice Identify the
choice that best completes the statement or answers the question.


1.

Select the graphs of the equations and approximate any
solutions of the system of linear equations.


2.

Find the system of linear equations below that has the solution , , , ,


3.

A small company produces bird feeders that sell for per unit. The
cost of producing each unit is , and the company has fixed costs of . Let the cost function be the total cost to produce x bird
feeders and let the revenue function be the total revenue from selling x
bird feeders. Graph the cost and revenue function and find the point of intersection of the
graphs.


4.

If possible, solve the system below by the method of elimination. Use the graph
to check the solution.


5.

If possible, solve the system below by the method of elimination.


6.

You invest a total of in two investments earning
and simple interest. (There is
more risk in the fund.) Your goal is to have a total annual
interest income of . The system of equations that represents this
situation is where x represents the amount
invested in the fund and y represents the amount
invested in the fund. Solve this system to determine the
smallest amount that you can invest at in order to meet your objective.


7.

Solve the system of linear equations below.


8.

Solve the system of linear equations below.


9.

Solve the system of linear equations below.


10.

Find the position equation for an object that has
distance at second,
at seconds, and at seconds.


11.

The sum of the measures of two angles of a triangle is
the measure of the third angle. The measure of the second angle is than the measure of the third angle. Find the measures of the three angles.
a.  The first angle is , the second angle is ,
and the third angle is .  b.  The first angle is
, the second angle is ,
and the third angle is .  c.  The first angle is
, the second angle is , and the third angle is .  d.  The first angle is
, the second angle is , and the third angle is .  e.  The first angle is
, the second angle is , and the third angle is . 


12.

Write the system of linear equations represented by the augmented matrix below.
Use variables x, y, z, v, and w.


13.

Describe the elementary row operation used to transform the first
matrix into the second matrix .
a.  Add times the third row to the second
row.  b.  Add times the second row to the third
row.  c.  Add times the third row to the second
row.  d.  Add times the second row to the third
row.  e.  Add times the second row to the third
row. 


14.

Solve for in the matrix below by using elementary row
operations to form a rowequivalent matrix.


15.

Find the determinant of the matrix below.


16.

Determine whether the points , , and are collinear.
a.  The points are not collinear.  b.  The points are
collinear. 


17.

Use a determinant to find the equation of the line through the points and .


18.

Determine if the ordered pair is a solution of the system
of linear inequalities .
a.  not a solution  b.  solution 


19.

Graph the system of linear inequalities below.


20.

Graph the system of linear inequalities below.
