-
Open-Ended Write and graph a system of inequalities for which the solution is bounded by a dashed vertical line and a solid horizontal line.
-
Writing Explain how you determine where to shade when solving a system of inequalities.
- Given a system of two linear inequalities, explain how you can pick test points in the plane to determine where to shade the solution set.
In Exercises 36–45, identify the inequalities A, B, and C for which the given ordered pair is a solution.
-
x
+
y
≤
2
x plus y less than or equal to 2
-
y
≤
3
2
x
−
1
y less than or equal to , 3 halves , x minus 1
-
y
>
−
1
3
x
−
2
y greater than negative , 1 third , x minus 2
- (0, 0)
-
(
−
2
,
−
5
)
open negative 2 comma negative 5 close
-
(
−
2
,
0
)
open negative 2 comma 0 close
-
(
0
,
−
2
)
open 0 comma negative 2 close
-
(
−
15
,
15
)
open negative 15 comma 15 close
- (3, 2)
- (2, 0)
-
(
−
6
,
0
)
open negative 6 comma 0 close
-
(
4
,
−
1
)
open 4 comma negative 1 close
-
(
−
8
,
−
11
)
open negative 8 comma negative 11 close
Solve each system of inequalities by graphing.
-
{
x
+
y
<
8
x
≥
0
y
≥
0
left brace . table with 3 rows and 1 column , row1 column 1 , x plus y less than 8 , row2 column 1 , x greater than or equal to 0 , row3 column 1 , y greater than or equal to 0 , end table
-
{
2
y
−
4
x
≤
0
x
≥
0
y
≥
0
left brace . table with 3 rows and 1 column , row1 column 1 , 2 y minus 4 x less than or equal to 0 , row2 column 1 , x greater than or equal to 0 , row3 column 1 , y greater than or equal to 0 , end table
-
{
y
≥
−
2
x
+
4
x
>
−
3
y
≥
1
left brace . table with 3 rows and 1 column , row1 column 1 , y greater than or equal to negative 2 x plus 4 , row2 column 1 , x greater than negative 3 , row3 column 1 , y greater than or equal to 1 , end table
-
{
y
≤
2
3
x
+
2
y
≥
|
x
|
+
2
left brace . table with 2 rows and 1 column , row1 column 1 , y less than or equal to , 2 thirds , x plus 2 , row2 column 1 , y greater than or equal to vertical line x vertical line plus 2 , end table
-
{
y
<
x
−
1
y
>
−
|
x
−
2
|
+
1
left brace . table with 2 rows and 1 column , row1 column 1 , y less than x minus 1 , row2 column 1 , y greater than negative vertical line x minus 2 vertical line plus 1 , end table
-
{
2
x
+
y
≤
3
y
>
|
x
+
3
|
−
2
left brace . table with 2 rows and 1 column , row1 column 1 , 2 x plus y less than or equal to 3 , row2 column 1 , y greater than vertical line x plus 3 vertical line negative 2 , end table
-
{
y
<
|
x
−
1
|
+
2
x
≥
0
left brace . table with 2 rows and 1 column , row1 column 1 , y less than vertical line x minus 1 vertical line plus 2 , row2 column 1 , x greater than or equal to 0 , end table
-
{
y
>
|
x
−
1
|
+
1
y
≤
−
|
x
−
3
|
+
4
left brace . table with 2 rows and 1 column , row1 column 1 , y greater than vertical line x minus 1 vertical line plus 1 , row2 column 1 , y less than or equal to negative vertical line x minus 3 vertical line plus 4 , end table
-
{
y
≤
|
x
|
−
2
y
≤
|
x
|
+
2
left brace . table with 2 rows and 1 column , row1 column 1 , y less than or equal to vertical line x vertical line negative 2 , row2 column 1 , y less than or equal to vertical line x vertical line plus 2 , end table
C Challenge
Geometry Write a system of inequalities to describe each shaded figure.
-
-
-
-
- Graph the “bowtie” inequality,
|
y
|
≤
|
x
|
.
vertical line y vertical line less than or equal to vertical line x vertical line .
-
Write a system of inequalities to describe the graph shown below.