body{margin:0;} noscript{z-index: 10000; position: fixed; display: block; height: 100%; width: 100%; background: #fff;} noscript .fa{font-size: 40px; display:block; color: #daa520;} noscript div{margin-top: 6%; padding-left: 20px; padding-right: 20px; text-align: center;} ! You must have JavaScript enabled to use this site.

Pearson Algebra 1 Common Core, 2011

PA

Pearson Algebra 1 Common Core, 2011 View details

7. Absolute Value Equations and Inequalities

Continue to next subchapter

Exercise 1 Page 210

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

Solutions: x=-5 or x=5
Graph:

Practice makes perfect

An absolute value measures an expression's distance from a midpoint on a number line. |x|= 5

This equation means that the distance is 5, either in the positive direction or the negative direction. |x|= 5 ⇒ lx= 5 x= - 5 In this case, our absolute value expression is only the variable x, so our equivalent pair of linear equations does not need any more simplifying. Now, let's graph these solutions on a number line.

Subchapter links

Lesson Check p.210

Practice and Problem-Solving Exercises p.211-213

Standardized Test Prep p.213

Mixed Review p.213