Lesson 1.4 Equations and Inequalities Goal: To learn how to solve equations and check solutions of equations and inequalities.

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Presentation transcript:

Lesson 1.4 Equations and Inequalities Goal: To learn how to solve equations and check solutions of equations and inequalities.

Equations An EQUATION is a statement formed by placing an equal “=“ sign between two expressions. An equations has a left and a right side. EX: 4x + 1 = 9

Solving Equations Finding all the solutions of an equation is called SOLVING the equations. Some are easy enough to be solved using Mental Math.

Solutions When the variable in an equation is replaced by a number, the resulting statement is either true or false. If the statement is true, the number is a SOLUTION of the equation. EX: 4x + 1 = 9 “2” is the solution to this problem.

Guided Practice Problems Solve the following: 2x=10 4=x – x = 6 X = 1 3

Page 25 Complete # 1-4 Be careful with #1. Don’t leave the Variable as a negative.

Inequality An Inequality is a statement formed by placing an inequality symbol, such as “ ” between two expressions. < is less than < is less than or equal to > is greater than or equal to > is greater than

Inequalities Inequalities can have MORE THAN ONE ANSWER [solution]!!! P. 26 Complete #6-9 Write if the answer is a solution or not a solution.

Home Work P. 27 #26-42