EngradeWikisMr. Bosler's ACP Algebra 2 Wiki › Day 9: Absolute Value Inequalities

Day 9: Absolute Value Inequalities

Day 9: Absolute Value Inequalities

Now, it's time to culminate all of our skill in inequalities utilizing absolute value.

Suppose |x - 7| > 4

First, we need to remove absolute value, as per definition, as follows

x - 7 > 4 OR x - 7 < -4 (When we split absolute value inequalities, if the original inequality is a greater than (or equal to), it will split to a disjunction. If the original inequality is a less than (or equal to), it will split to a conjunction)

Now, solve the inequality and you get:

x > 11 OR x < 3

    Close