4 WARM UP GRAPH THE INEQUALITY (Lesson 1.4) x+5<−13 -6 + 5y > 19

3 WARM UP GRAPH THE INEQUALITY (Lesson 1.4) x+5<−13 -6 + 5y > 19

2 WARM UP GRAPH THE INEQUALITY (Lesson 1.4) x+5<−13 -6 + 5y > 19

1 WARM UP GRAPH THE INEQUALITY (Lesson 1.4) x+5<−13 -6 + 5y > 19

WARM UP GRAPH THE INEQUALITY (Lesson 1.4) x+5<−13 -6 + 5y > 19 GRAPH THE INEQUALITY (Lesson 1.4) x+5<−13 -6 + 5y > 19 -2x + 9 > 15 -y + 9 < 14

Pre-Lesson to 7.6 Systems of Linear Inequalities SUMMARY > (greater than) Dashed line, shade above. < (less than) Dashed line, shade below. > (greater than or equal to) Solid line, shade above. < (less than or equal to) Solid line, shade below.

Pre-Lesson to 7.6 Systems of Linear Inequalities EXAMPLE 3 Use slope-intercept Form Graph the inequality x + y > 3 SOLUTION ① Graph the corresponding equation in slope-intercept form. Use a dashed line.

Pre-Lesson to 7.6 Systems of Linear Inequalities EXAMPLE 3 Use slope-intercept Form Graph the inequality x + y > 3 SOLUTION ② Test the origin. (0, 0) is below the line and not a solution to the inequality. (0, 0)

Pre-Lesson to 7.6 Systems of Linear Inequalities EXAMPLE 3 Use slope-intercept Form Graph the inequality x + y > 3 SOLUTION ③ Shade the area above the line.

Pre-Lesson to 7.6 Systems of Linear Inequalities EXAMPLE 4 Use slope-intercept Form Graph the inequality 2x – y > -2 SOLUTION ① Graph the corresponding equation in slope-intercept form. Use a solid line.

Pre-Lesson to 7.6 Systems of Linear Inequalities EXAMPLE 4 Use slope-intercept Form Graph the inequality 2x – y > -2 SOLUTION ② Test the origin. (0, 0) is below the line and is a solution to the inequality. (0, 0)

Pre-Lesson to 7.6 Systems of Linear Inequalities EXAMPLE 4 Use slope-intercept Form Graph the inequality x + y > 3 SOLUTION ③ Shade the area below the line.