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# Alg1 lesson 6-1 and 6-2

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### Alg1 lesson 6-1 and 6-2

1. 1. Solve, then check your solution.<br />0<br />77<br />0 – 12 > 65<br />– 12 > 65<br />Example 1-1a<br />
2. 2. Solve and graph<br />y21<br />0<br />21<br />Example 1-2a<br />
3. 3. Solve, then graph the solution.<br />-9<br />0<br />Example 1-3a<br />
4. 4. Solve<br />Seven times a number is greater than six times that number minus two.<br />Seven timesa number<br />is greaterthan<br />six timesthat number<br />minus<br />two.<br />7n<br />6n<br />2<br />><br />–<br />Example 1-5a<br />
5. 5. True or False?<br />5 > -3<br />True<br />Now multiply both sides by 2<br />5 > -3<br />2(5) > 2(-3)<br />10 > -6<br />True<br />True or False?<br />5 > -3<br />True<br />Now multiply both sides by -2<br />5 > -3<br />-2(5) > -2(-3)<br />-10 > 6<br />False<br />
6. 6. 5 > -3<br />2(5) > 2(-3)<br />5 > -3<br />-2(5) > -2(-3)<br />10 > -6<br />True<br />-10 6<br />><br /><<br />False<br />True<br />If you multiply or divide both sides of an inequality by a negative number, reverse the inequality sign.<br />
7. 7. Solve. Graph the solution<br />0<br />36<br />Example 2-1a<br />
8. 8. Solve and graph the solution:<br />-17<br />0<br />Example 2-5a<br />
9. 9. Solve and graph the solution<br />0<br />5<br />Example 2-4a<br />
10. 10. 6 ÷<br />6 ·<br />= -8<br />Example 2-2a<br />