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The Wolves basketball team is pictured below. Can you determine the height of each player?

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Presentation on theme: "The Wolves basketball team is pictured below. Can you determine the height of each player?"— Presentation transcript:

1 The Wolves basketball team is pictured below. Can you determine the height of each player?

2 ANSWER Player's Heights: –King is 76.5 inches tall. –Boomer is 79 inches tall. –Julie is 74.5 inches tall. –Carmello is 77 inches tall. –Timmy is 72 inches tall. –Larry is inches tall.

3 a.) What inequality is depicted by this see-saw? b.) Solve the inequality for x?

4 ANSWER a.) The see-saw depicts x + 3 < 7. b.) x + 3 < 7 x < 4

5 Solving linear inequalities is pretty much the same as solving linear equations... with one very important exception.

6 Look at this true statement: Suppose we multiply both sides by > 3 (-1)(5) ? (3)(-1) -5 ? -3

7 What is the relationship between these two numbers ? ANS: -5 is less than -3 because it is further to the left on the number line. - 5 < -3

8 So we just learned the one exception. That is: When you multiply an inequality by a negative number, it changes the direction of the inequality. This is also true if you divide by a negative.

9 EXAMPLE: -5x < x > -2 Dividing both sides by a negative number reverses the inequality sign. Divide both sides by negative 5

10 Lets Practice Solve and Graph < 2r 2.r/3 > 2 3.x + 3 < w >

11 Writing Inequalities Write an algebraic inequality 1.The recipe calls for not less than 16 ounces of butter. 2.Mr. Valdez says he cannot contribute more than $ The team will have to score no fewer than 20 points to win. 4.The sleeping bag is useful for camping when temperatures are at least -5F. x 16 x 500 x 20 x -5


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