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Big Ideas Math Integrated I, 2016

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Big Ideas Math Integrated I, 2016 View details

4. Solving Absolute Value Equations

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Exercise 4 Page 29

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

$x = 6$ and $x = - 2$

Practice makes perfect

Before we can solve this equation, we need to isolate the absolute value expression using the Properties of Equality.

∣ x - 2 ∣ + 5 = 9

$LHS - 5 = RHS - 5$

∣ x - 2 ∣ = 4

Solving for $x$

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

∣ x - 2 ∣ = 4

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Subchapter links

Communicate Your Answer p.27

Monitoring Progress p.28-31

Exercises p.32-34