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


1.

a.  (2, –1)  c.  (2, 1)  b.  no solution  d.  (–2,
–1) 


2.

Use substitution to solve the system of equations.


3.

If the system is to be solved by substitution, which expression can be
replaced for x in the second equation?
a.  15  2y  c.   b.  21  5x  d.  


4.

Solve the system by substitution.
a.  {(2, 7)}  c.  {(5, 1)}  b.  {(1, 1)}  d.  none of these 

Short Answer


5.

Use substitution to solve the system of equations.


6.

Use substitution to solve the system of equations.
