2 Equations: a statement that states two expressions are equal Variable: a symbol that represents many different numbers in a set of numbers (an unknown)Literal equation: an equation that contains two or more variables.
3 A. Write an algebraic expression to represent each verbal expression. 1. 3 more than a number2. six times the cube of a number3. the square of a number decreased by the product of 5 and the number4. twice the difference of a number and 6
4 B. Write a verbal sentence to represent each equation. = 232. 7y – 2 = 193.
5 C. Properties of Equality/Property of Inequalities: Whatever you do to one side of an equation, you MUST do to the other side.
6 Steps for solving equation/inequality: Simplifying either side of an equation.Add/subtract each side of an equation.Multiply/divide each side of an equation.Check your solution/ Graph answer for inequality.
7 Inequalities: Graphing Less than < open circleGreater than > open circleLess than or equal to ≤ closed circleGreater than or equal to ≥ closed circleNot equal to ≠ open circle on the number