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# 7th Grade Math / Lesson 7: Inequalities III

 INEQUALITIES What will we be learning in this lesson? In this lesson, you will learn more about inequalities and their graphs. Vocabulary words are found in this purple color throughout the lesson. Remember to put these in your notebook.

 Inequalities The solutions to an inequality are the numbers that you can put in for the variables that actually work in the problem. As we saw in a previous section, to determine if a number is a solution, just put the number in for the variable and see if it works. What do you do if you are not given the number to check? Use a method called "Guess and Check". Just pick a number that you think might work and try it. If it works, great. If not, pick another one and try again.

 Inequalities Use the Guess and Check method (also called mental math) to find 3 solutions for the following inequality.1. x - 8 < 16

 Inequalities Use the Guess and Check method (also called mental math) to find 3 solutions for the following inequality.1. x - 8 < 16 Start by picking a number that you think might work.Let's try 50. Plug the number into the original inequality.x - 8 < 1650 - 8 < ? 16 42 < ? 1642 is not less than 16 so this means that 50 is not a solution. 42 is too large.Pick another number and try again.

 Inequalities Use the Guess and Check method (also called mental math) to find 3 solutions for the following inequality.1. x - 8 < 16 Let's try 20. Put 20 into the original inequality.x - 8 < 1620 - 8 < ? 1612 < ? 1612 is less than 16 so this means that 20 is a solution.Now we need two more solutions. Since 20 works, pick numbers around 20.

 Inequalities Use the Guess and Check method (also called mental math) to find 3 solutions for the following inequality. Can you find solutions to an inequality? Go back to the classroom to get to your homework and any other items you need to attend to.