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Pearson Algebra 1 Common Core, 2011

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Pearson Algebra 1 Common Core, 2011 View details

8. Unions and Intersections of Sets

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Exercise 49 Page 220

How many cases do you have after you remove the absolute value?

x=4 or x=- 4

Practice makes perfect

An absolute value measures an expression's distance from a midpoint on a number line.

|x|=4 This equation means that the distance between x and 0 is 4, either in the positive direction or the negative direction. This can be expressed as a pair of equations equivalent to the absolute value equation. |x|=4 ⇒ lx= 4 x= - 4

Subchapter links

Lesson Check p.218

Practice and Problem-Solving Exercises p.218-220

Standardized Test Prep p.220

Mixed Review p.220