Q2 Summative Test 3 in Math 8

Which of the following is NOT a symbol of linear inequality?

• =

• ≥

• ≠

• <

What is the graph of linear inequality?

• a plane

• half of parabola

• parabola

• straight line

Which of the following shows linear inequality in two variables?

• 6𝑎 – 3𝑎 = 9

• 𝑘 + 4 < 8 + 2𝑘

• 3𝑝 ≤ 4 + 𝑝

• 21𝑚 ≥ 2𝑛 − 1

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

• 2𝑥 – 𝑦 > 6

• 𝑥 + 5𝑥 ≥ 15

• 3y < 2𝑦 + 10

• 53 ≤ 5𝑚 + 2m

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

• 𝑥 + 𝑦 = 2

• 𝑥 + 5 > 8

• 3𝑚 + 5𝑛 < 10

• 3𝑞 – 2𝑞 ≠ 6

How many solutions does a linear inequality in two variables have?

• 0

• 1

• 2

• infinite

Which is true about the graphical solution of inequalities in two variables?

• region of points

• sets of  points

• sets of planes

• region of plane

Which of the following inequalities is the same as “the sum of 2𝑥 and 𝑦 is at least 20”?

• 2𝑥 + 𝑦 ≥ 20

• 2 𝑥 + 𝑦 > 20

• 2𝑥 + 𝑦 ≤ 20

• 2𝑥 + 𝑦 < 20

Which of the following mathematical expressions is written in standard form?

• 𝑥 < 𝑦 + 5

• 2𝑥 + 3𝑦 < 12

• 2𝑦 + 6 > 3𝑥

• 2𝑥 + 5 ≤ x – 3y – 7

Which of the following verbal phrases DOES NOT represent a linear inequality in two variables?

• “the number of students in the learning center is 20”

• “the number of students in the learning center is at most 20”

• “the number of students in the learning center is greater than 20”

• “the number of students in the learning center is less than or equal to 20"