1. 3.3A WRITING A SYSTEM
OF LINEAR INEQUALITIES
Today’s objectives:
I will graph a system of
1.
linear inequalities.
I will write system of linear
2.
inequalities given a graph.
Graphing using the y-intercept & slope.
1) If < or >, make the lines dotted
(dashed).
2) If < or >, make the lines solid.
3) If ‘y >’ or ‘y ≥’, above the line.
4) If ‘y <’ or ‘y ≤’, below the line.

2. Writing a system of linear inequalities given
a graph.
1) Write an equation for each line.
2) Change each equation to an
inequality based on the shading.
a) If the lines are dotted
(dashed), use < or >.
b) If the lines are solid, use < or
>.
c) If the shading is above, use >
or >.
d) If the shading is below, use <
or <.

3. Example 1.

4. Example 2.

5. Example 3.