REVIEWER 2nd Quarter Math 8

Which of the following is NOT a linear inequality in two variables?

• 2x+3y≥ 6

• 2x-3y> 6

• a+b<5

• 3a-by=5

In the inequality a+b≤12, which of the following is a solution set?

• (a≤6, b ≤ 6)

• (a ≤7, b ≤6)

• (a≤6, b ≤12)

• (a≤1, b ≤12)

Which of the following best describes the graph of linear inequalities in two variables?

• Straight line

• Half-plane

• Parabola

• Circle

Kim bought 4 mangoes and 7 guavas. The total amount she paid was at least ₱ 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?

• 4𝑥 + 7𝑦 ≥ 230

• 4𝑥 + 7𝑦 ≤ 230

• 4𝑥 + 7𝑦 > 230

• 4𝑥 + 7𝑦 < 230

Which of the following is the solution of systems of linear inequalities in two variables?

• straight line

• a shaded region

• the overlapping region

• horizontal line

Which of the following ordered pairs satisfy both 2x+7y>7 and 3x-y≤2?

• (0, 0)

• (10, -1)

• (-4, 6)

• (-2, -8)

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

• 3𝑥 + 𝑦 ≤ 3

• 3𝑥 - 𝑦 ≤ 3

• 3𝑥 - 𝑦 < 15

• 3𝑥 + 𝑦 < 15

Which of the following graphs represents a function?

• I only

• II only

• III only

• I and II

Which of the following ordered pairs represents a function?

• {(-2, 2), (- 3, 2), (-5, 2), (-2, -2)}

• {(1, 2), (2, 3), (3, 4), (4, 5)}

• {(-3, 0), (-3,1), (-3, 2), (-3, 3)}

• {(1, 5), (2, 6), (2, 7), (1, 6)}

Which of the following is merely a relation?

• one to one relation

• one to many relation

• many to one relation

• A and C only