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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)