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Name _______________________________________ Date __________________ Class __________________ Writing Inequalities WS 8.3 An equation is a statement that says two quantities are equal. An inequality is a statement that says two quantities are not equal. A solution of an inequality that contains a variable is any value or values of the variable that makes the inequality true. All values that make the inequality true can be shown on a graph. Inequality x3 Meaning Solution of Inequality All numbers greater than 3 The open circle at 3 shows that the value 3 is not included in the solution. x3 All numbers greater than or equal to 3 The closed circle at 3 shows that the value 3 is included in the solution. x3 All numbers less than 3 x3 All numbers less than or equal to 3 Graph the solutions of each inequality. 1. x 4 2. x 1 • Draw an open circle at 4. • Draw a closed circle at 1. • Read x > 4 as “x is greater than 4.” • Read x 1 as “x is less than or equal to 1.” • Draw an arrow to the right of 4. • Draw an arrow to the left of 1. 3. a 1 4. y 3 Write an inequality that represents each phrase. 5. The sum of 2 and 3 is less than y. _______________________________________ 6. The sum of y and 2 is greater than or equal to 6. _______________________________________ Original content Copyright © by Houghton Mifflin Harcourt. Additions and changes to the original content are the responsibility of the instructor. 250 Name _______________________________________ Date __________________ Class __________________ WS Writing Inequalities 8.3 Complete the graph for each inequality. 1. a 3 2. r –2 Graph the solutions of each inequality. Check the solutions. 3. w 0 Check: ___________________________ 4. b 4 Check: ___________________________ 5. a 1.5 Check: ___________________________ Write an inequality that represents each phrase. Draw a graph to represent the inequality. 6. the sum of 1 and x is less than 5 7. 3 is less than y minus 2 _____________________________________ _____________________________________ Write and graph an inequality to represent each situation. 8. The temperature today will be at least 10F. _________________________ 9. Ben wants to spend no more than $3. _________________________ Write an inequality that matches the number line model. 10. _________________________ 11. _________________________ Original content Copyright © by Houghton Mifflin Harcourt. Additions and changes to the original content are the responsibility of the instructor. 251