Presentation on theme: "Course 2: Inequalities Objectives:"— Presentation transcript:
1 Course 2: Inequalities Objectives: To determine whether a number is a solution of an inequalityTo graph inequalities on the number lineTo write inequalities
2 InequalitiesAn inequality is a mathematical sentence containing >, <, >, <.
3 Inequalities < > Words - is less than - is greater than -is less than or equal to- is at mostis greater than or equal tois at leastSymbols<>
4 InequalitiesAny number that makes an inequality true is a solution of the inequality.Inequalities have many solutions.Example: x > 4List 4 possible solutions. 4.5, 5, 7, 12.5
5 Example 2 The solutions are shown by shading a number line. Example: x > 434567
6 Example 1 Determine whether each number is a solution of a) 3 yes, because 3 is less than 7b) -2yes, because -2 is less than 7c) 9no, because 9 is not less than or equal to 7d) 7yes, because 7 is equal to 7