Sample Quiz

1. Solve the linear system by graphing, then check.                                     
     y = –x – 7
     y = 3x + 5

2. Explain what POI stand for and what it is.

3. Solve by substation  
    y = 2x + 3
    3x – 5y = –8

4. Solve by substation  
    y = 4x – 5 
    2x + 3y = 13

5. Solve by eliminations 
    3x + y = 7
    2x – y = 3

6. Solve by elimination 
    3x + 2y = 7
    5x – 2y = 1

Answers to Sample Quiz

1. It does intercept and the POI is (–3, –4)

2. POI stands for Point of Interception and POI is when two lines intercept/ cross each other.

3.  (–1, 1)    

4. (2,3)  

5. (2,1)

6. (1,2)