Solve system by the substitution method.
1. y = 2x - 6
y = x - 5
2. 7x - 4y = 26
y = x - 5
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Solve each system by the addition method. If there is no solution or an infinite number of solutions, so state.
3.6x + 2y = 8
2x - y = 6
4. 7x - 2y = 8
-14x + 4y = 8
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5. Solve the compound inequality. Give the graph or describe it.
x < 5 and x > 4
Solve each absolute value equation or inequality
6.|x - 5 | > -1
Solve the inequality:
7. 3 | 2x +3 | + 6 > 0