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Lesson: Solving Systems of Inequalities

In this lesson, we will learn how to solve systems of linear inequalities by graphing them and identify the regions representing the solution.

Video

08:38

Sample Question Videos

05:11
03:04
03:01

Worksheet • 24 Questions • 7 Videos

Q1:

State the system of inequalities whose solution is represented by the following graph.

  • A 𝑥 ≥ 0 , 𝑦 ≥ 0
  • B 𝑥 ≤ 0 , 𝑦 ≥ 0
  • C 𝑥 ≥ 0 , 𝑦 ≤ 0
  • D 𝑥 ≤ 0 , 𝑦 ≤ 0

Q2:

State the system of inequalities whose solution is represented by the following graph.

  • A 𝑦 ≥ 3 𝑥 + 3 , 𝑦 > − 3 𝑥 − 8
  • B 𝑦 > − 3 𝑥 + 3 , 𝑦 ≥ 3 𝑥 − 8
  • C 𝑦 ≥ 3 𝑥 + 3 , 𝑦 < − 3 𝑥 − 8
  • D 𝑦 < 3 𝑥 − 3 , 𝑦 ≤ − 3 𝑥 + 8
  • E 𝑦 ≥ 3 𝑥 − 3 , 𝑦 > − 3 𝑥 + 8

Q3:

Use the graph to find the solution set of the inequality 𝑓 ( 𝑥 ) < 𝑔 ( 𝑥 ) in ℝ .

  • A ] 0 , 6 [
  • B [ 0 , 6 ]
  • C ℝ − [ 0 , 6 ]
  • D ℝ − ] 0 , 6 [

Q4:

Which of the points below belongs to the solution set of the system of inequalities represented by the figure shown?

  • A ( 4 , 3 )
  • B ( 1 , 3 )
  • C ( 3 , 6 )
  • D ( 6 , 8 )

Q5:

State the system of inequalities whose solution is represented by the following graph.

  • A 𝑥 ≥ 0 , 𝑦 ≥ 0 , 3 ≤ 𝑥 < 6 , 2 ≤ 𝑦 ≤ 6 , 𝑥 + 𝑦 ≤ 8
  • B 𝑥 ≥ 0 , 𝑦 ≥ 0 , 3 ≤ 𝑥 < 6 , 2 ≤ 𝑦 ≤ 6 , 𝑥 + 𝑦 > 8
  • C 𝑥 ≥ 0 , 𝑦 ≥ 0 , 3 ≤ 𝑥 ≤ 6 , 2 ≤ 𝑦 ≤ 6 , 𝑥 + 𝑦 ≤ 8
  • D 𝑥 ≥ 0 , 𝑦 ≥ 0 , 3 ≤ 𝑥 ≤ 6 , 2 ≤ 𝑦 < 6 , 𝑥 + 𝑦 < 8
  • E 𝑥 ≥ 0 , 𝑦 ≥ 0 , 3 ≤ 𝑦 < 6 , 2 ≤ 𝑥 ≤ 6 , 𝑥 + 𝑦 ≤ 8

Q6:

Find the solution set of the linear inequalities shown below.

  • A ∅
  • B ℝ
  • C 𝑦 < − 0 . 5 𝑥 − 5
  • D 𝑦 > − 0 . 5 𝑥

Q7:

Which regions on the graph contain solutions that satisfy both of the inequalities

  • A C and D
  • B E and F
  • C A and B
  • D D and E
  • E C and F

Q8:

Which regions on the graph contain solutions to both of the inequalities

  • A A and D
  • B C and D
  • C A and G
  • D A and B
  • E D and E

Q9:

Which region on the graph contains solutions to the set of inequalities

  • A G
  • B F
  • C A
  • D E
  • E D

Q10:

Use the graph to identify which of the following points is a solution to the given set of inequalities.

  • A
  • B
  • C
  • D
  • E

Q11:

Use the graph to identify which of the following points is a solution to the set of inequalities.

  • A ( 1 , − 1 )
  • B ( − 2 , − 2 )
  • C ( 0 , − 4 )
  • D ( 3 , 3 )
  • E ( − 3 , 2 )

Q12:

Which of the regions on the graph contain solutions to the inequality 𝑦 ≥ 2 𝑥 − 4 ?

  • A A , B , C , and D
  • B A , B , D , and G
  • C A , D , E , and G
  • D A , B , D , and F
  • E C , D , E , and F

Q13:

Use the graph to identify which of the following points is NOT a solution to the given set of inequalities.

  • A ( 1 , 2 )
  • B ( 1 , − 3 )
  • C ( 2 , − 6 )
  • D ( 0 , 0 )
  • E ( 0 , − 1 0 )

Q14:

Which region on the graph contains solutions to the set of inequalities

  • A D
  • B F
  • C E
  • D C
  • E A

Q15:

Which region on the graph contains solutions to the set of inequalities

  • A B
  • B A
  • C E
  • D G
  • E C

Q16:

Which region on the graph contains solutions to the set of inequalities

  • A A
  • B B
  • C C
  • D F
  • E E

Q17:

Find the system of inequalities that forms the triangle shown in the graph.

  • A 𝑦 < 2 𝑥 + 6 , 𝑦 ≥ − 𝑥 , 𝑦 ≤ − 1 0 𝑥 + 1 8
  • B 𝑦 < 2 𝑥 + 6 , 𝑦 ≥ − 𝑥 , 𝑦 ≤ 1 0 𝑥 + 1 8
  • C 𝑦 > 2 𝑥 + 6 , 𝑦 ≥ − 𝑥 , 𝑦 ≤ − 1 0 𝑥 + 1 8
  • D 𝑦 < 2 𝑥 + 6 , 𝑦 ≥ − 𝑥 , 𝑦 ≥ − 1 0 𝑥 + 1 8
  • E 𝑦 < 2 𝑥 + 6 , 𝑦 ≤ − 𝑥 , 𝑦 ≤ − 1 0 𝑥 + 1 8

Q18:

Fill in the blank: The quadrant representing the solution set of the inequalities 𝑦 < 0 and 𝑥 > 0 is the quadrant.

  • A 4 t h
  • B 1 s t
  • C 2 n d
  • D 3 r d

Q19:

Fill in the blank: The quadrant representing the solution set of the inequalities 𝑦 < 0 and 𝑥 < 0 is the quadrant.

  • A 3 r d
  • B 1 s t
  • C 4 t h
  • D 2 n d

Q20:

State the system of inequalities whose solution is represented by the following graph.

  • A 𝑥 ≥ 0 , 𝑦 ≥ 0 , 2 ≤ 𝑥 < 7 , 4 ≤ 𝑦 < 7 , 𝑥 + 𝑦 ≤ 9
  • B 𝑥 ≥ 0 , 𝑦 ≥ 0 , 2 ≤ 𝑥 < 7 , 4 ≤ 𝑦 < 7 , 𝑥 + 𝑦 > 9
  • C 𝑥 ≥ 0 , 𝑦 ≥ 0 , 2 ≤ 𝑥 ≤ 7 , 4 ≤ 𝑦 < 7 , 𝑥 + 𝑦 ≤ 9
  • D 𝑥 ≥ 0 , 𝑦 ≥ 0 , 2 ≤ 𝑥 ≤ 7 , 4 ≤ 𝑦 ≤ 7 , 𝑥 + 𝑦 < 9
  • E 𝑥 ≥ 0 , 𝑦 ≥ 0 , 2 ≤ 𝑦 < 7 , 4 ≤ 𝑥 < 7 , 𝑥 + 𝑦 ≤ 9

Q21:

State the system of inequalities whose solution is represented by the following graph.