Intermediate Algebra 2e

# Key Terms

compound inequality
A compound inequality is made up of two inequalities connected by the word “and” or the word “or.”
conditional equation
An equation that is true for one or more values of the variable and false for all other values of the variable is a conditional equation.
An equation that is false for all values of the variable is called a contradiction. A contradiction has no solution.
identity
An equation that is true for any value of the variable is called an Identity. The solution of an identity is all real numbers.
linear equation
A linear equation is an equation in one variable that can be written, where a and b are real numbers and $a≠0,a≠0,$ as $ax+b=0.ax+b=0.$
solution of an equation
A solution of an equation is a value of a variable that makes a true statement when substituted into the equation.