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Illustrating & Graphing Linear Inequalities in Two Variables

Total questions: 15

Worksheet time: 29mins

Name
Class
Date
1.

Which of the following is a linear inequality in two variables?

a)

𝑥 + 𝑦 = 2

b)

𝑥 + 5 > 8

c)

3𝑚 + 5𝑛 < 10

d)

3𝑞 – 2𝑞 ≠ 6

2.

Which of the following inequalities illustrate “the sum of 𝑥 and 𝑦 is at most 15”?

a)

𝑥 + 𝑦 = 15

b)

𝑥 + 𝑦 > 15

c)

𝑥 + 𝑦 ≤ 15

d)

𝑥 + 𝑦 ≥ 15

3.

Which of the following inequality has (5, 1) as a solution?

a)

3𝑥 + 𝑦 ≤ 3

b)

3𝑥 – 𝑦 ≤ 3

c)

3𝑥 – 𝑦 < 15

d)

3𝑥 + 𝑦 < 15

4.

For what possible values of 𝑥 and 𝑦 will make the inequality 5𝑥 + 3𝑦 > 12 true?

a)

( 0, 3 )

b)

( 3, -1 )

c)

( 1, 1 )

d)

( 3, 0 )

5.

Which of the following inequalities is represented by the given graph?

a)

2𝑥 + 2𝑦 > 2

b)

3𝑥 + 2𝑦 < 2

c)

3𝑥 − 2𝑦 > 2

d)

3𝑥 – 2𝑦 < 2

6.

Which is the correct inequality for the shaded region?

a)

𝑦 = − 𝑥 − 2

b)

𝑦 > −𝑥 − 2

c)

. 𝑦 < − 𝑥 + 2

d)

𝑦 > 𝑥 – 2

7.

Which of the following points satisfy the inequality 𝑦 < 2𝑥 – 3?

a)

(5, 2)

b)

(2, 2)

c)

(2, 5)

d)

(0, 1)

8.

Which of the following inequalities is represented by the graph?

a)

2𝑥 + 3𝑦 ≥ 15

b)

2𝑥 + 3𝑦 ≤ 15

c)

3𝑥 – 2𝑦 ≥ 15

d)

3𝑥 – 2𝑦 ≤ 15

9.

Transform 3𝑥 − 2𝑦 < 7 into slope- intercept form.

a)

𝑦 < 3/2 𝑥 + 7/2

b)

𝑦 > 3/2 𝑥 + 7/2

c)

𝑦 > 3/2 𝑥 − 7/2

d)

𝑦 > 2/3 𝑥 − 7/3

10.

In the inequality 4𝑎 + 3𝑏 < 12, what could be the possible value of 𝑎 if 𝑏 = 2?

a)

𝑎 > 2/3

b)

𝑎 > −3/2

c)

𝑎 < 2/3

d)

𝑎 < 3/2

11.

What can be said about solutions of the inequality 𝑥 + 2𝑦 > 5?

a)

The solutions are located below the line.

b)

The solutions are located above the line.

c)

The solutions are on the line.

d)

All of the above.

12.

The graph of 𝑦 ≤ 2𝑥 + 5 is shown below, which of the following ordered pair does not satisfies the inequality?

a)

(2, −5)

b)

(5, 2)

c)

(−2, 7)

d)

(5, −7)

13.

To graph 2𝑥 + 𝑦 ≥ 4, we begin by graphing the boundary line of the inequality, what is the slope (m) and y-intercept (b) of the inequality?

a)

𝑚 = −2, 𝑏 = −1

b)

𝑚 = −2, 𝑏 = 4

c)

𝑚 = 2, 𝑏 = −4

d)

𝑚 = 2, 𝑏 = −1

14.

Bam bought 4 mangoes and 7 guavas. The total amount she paid was at least 𝑃ℎ𝑝 230. If 𝑥 represents the cost of each mango and 𝑦 the cost for each guava, which of the following mathematical statements represents the given situation?

a)

4𝑥 + 7𝑦 ≥ 230

b)

4𝑥 + 7𝑦 ≤ 230

c)

4𝑥 + 7𝑦 > 230

d)

4𝑥 + 7𝑦 < 230

15.

. The total amount Shobie paid for two kilos of beef and three kilos of fish is less than 𝑃ℎ𝑝 700. Suppose a kilo of beef costs 𝑃ℎ𝑝 250. What what will be the maximum cost of a kilo of fish? Round –off the answer to a whole number.

a)

𝑃ℎ𝑝 50

b)

𝑃ℎ𝑝 65

c)

𝑃ℎ𝑝 66

d)

𝑃ℎ𝑝 67