# Algebra I Section 5-6 Graphing Inequalities in Two Variables.

## Presentation on theme: "Algebra I Section 5-6 Graphing Inequalities in Two Variables."— Presentation transcript:

Algebra I Section 5-6 Graphing Inequalities in Two Variables

Review: Graph the equation using slope-intercept form. 

Graphing Linear Inequalities  Step 1: Rewrite the equation so y is by itself  Step 2: Write down the slope and the y-intercept  Step 3: Plot the y-intercept (the “b” value)  Step 4: “Move” up/down the slope from that point

Graphing Linear Inequalities (continued) 

 Step 6: Test a point to determine which side of the line should be shaded  If the test point is true, then shade the side that does include the test point  If the test point is false, then shade the side that does not include the test point

Graph each inequality. List the m and b, and say whether it is a dashed or solid line. Then graph and shade. 

Constant Inequalities  horizontal line  slope = 0  equation: y (inequality sign) number  follow the same steps

Graph each inequality. Write whether it is a dashed or solid line. Then graph and shade. 