

1. 
If you use the substitution method to solve the system of equations 3x  2y = 4 and x + y = 5, which of the following would be the best method?
Method I: Solve the second equation for x, and substitute 5  y for x into the first equation.
Method II: Solve the second equation for y, and substitute 5  x for y into the first equation.



A. 
Method II 
B. 
Both Method I and Method II are correct. 


C. 
Method I 
D. 
Neither Method I nor Method II is correct. 


Hint 


2. 
Which of the following describes the system of equations 2x  y + 4 = 0 and 4x  2y + 7 = 0? 


A. 
inconsistent 
B. 
none of these 


C. 
consistent and dependent 
D. 
consistent and independent 


Hint 


3. 
Solve the system of equations y = 0.5x and 4y = x  2 by graphing. 


A. 

B. 



C. 

D. 



Hint 


4. 
Solve the system of equations x = 4 and 3x  4y = 12 by graphing. 


A. 

B. 



C. 

D. 



Hint 


5. 
Choose the best method to solve the system of equations x + y = 2 and y = 3x  4. 


A. 
Substitution 
B. 
Graphing 


C. 
Eliminate x 
D. 
Eliminate y 


Hint 

