Chapter+1.4

Chapter 1.4 Write Equations and Inequalities

Vocabulary: **Equation:** A mathmatical sentence with = in between two expressions. **Inequality:** It is like an equation only with <, >, __<__, __>__ instead of =. **Open Sentence:** An equation or inequality that contains an algebraic expression. **Solution of an equation or an inequality:** When you substitute the variable with a number, if the statement is true, it is a solution.

Examples: EX 1: 5//w=//20 //w = 4// EX 2: The sum of //n// and 4 is no more than 13 Answer: //n+//4__<__13