Compound Inequalities and Flipping the Inequality
We continued our study of compound inequalities by solving problems of the form:
-5 ≤ 7 - 3a < -2
Students learned that in these situations, the inequality signs had to be reversed in order to obtain answers that made sense. The rule for solving inequalities is that when you multiply or divide by a negative number, you must reverse the inequality signs. I showed how you could add a couple extra steps to add or subtract terms in order to solve for the variable. This is a great method to verify your work.
Tonight's Homework: Complete the "Inequality Practice" worksheet (pink). Then do Lesson 6.3 ( 26 - 30 ).
-5 ≤ 7 - 3a < -2
Students learned that in these situations, the inequality signs had to be reversed in order to obtain answers that made sense. The rule for solving inequalities is that when you multiply or divide by a negative number, you must reverse the inequality signs. I showed how you could add a couple extra steps to add or subtract terms in order to solve for the variable. This is a great method to verify your work.
Tonight's Homework: Complete the "Inequality Practice" worksheet (pink). Then do Lesson 6.3 ( 26 - 30 ).
posted by Miss Brands | 4:34 PM
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