5LINEAR INEQUALITIES
So far, we've worked extensively with equations. However, we often deal with situations where we find values of the variable in which one expression is greater than or less than another. Fortunately, despite some important differences, the methods we use here are similar to the methods we used to solve equations.
5.1 Basic Principles of Solving Inequalities
First, let's start with a basic definition: an inequality is a statement that says that one expression is greater than or less than another expression.
Like equations, inequalities must be either true or false—they can't be both at the same time. As with equations, we often want to find the values of the variables that make the inequality true. We call these the ...
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