1. 4 WARM UP GRAPH THE INEQUALITY (Lesson 1.4) x+5<−13 -6 + 5y > 19

2. 3 WARM UP GRAPH THE INEQUALITY (Lesson 1.4) x+5<−13 -6 + 5y > 19

3. 2 WARM UP GRAPH THE INEQUALITY (Lesson 1.4) x+5<−13 -6 + 5y > 19

4. 1 WARM UP GRAPH THE INEQUALITY (Lesson 1.4) x+5<−13 -6 + 5y > 19

5. 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

6. 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.

7. 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.

8. 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)

9. 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.

10. 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.

11. 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)

12. 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.