Review: 2nd quarter math topics

What is the graph of a linear inequality in two variables?

• half-plane

• half of a parabola

• parabola

• straight line

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

• one

• two

• three

• many

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

• x + y = 10

• 2x + 3y = 10

• 4x - y ≤ 3

• 5x + 25 = 15

Which of the following is the correct graph of the inequality y > 2x + 1?

• a solid line with shading above the line

• a solid line with shading below the line

• a dashed line with shading above the line

• a dashed line with shading below the line

For the inequality 3x - y ≤ 4, which is the correct graph?

• a dashed line with no shading

• a solid line with shading below the line

• a solid line with shading above the line

• a dashed line with shading below the line

The total amount Cassandra paid for two kilos of pork and three kilos of fish is less than P700. Suppose a kilo of pork costs Php250. What will be the maximum cost of a kilo of fish? Round off the answer to the nearest whole number.

• Php60

• Php65

• Php66

• Php67

Solve the inequality 3x - 4y < 12, for y in terms of x.

• y > 3x-3

• y < 3x/4 - 3

• y < 12- 3x/4

• y > 12 - 3x/4

Solve the system of linear inequalities: 3x + 2y ≤12 and x - y > 2 Which of the following points is in the solution set of the system?

• (4,1)

• (2, 3)

• (3, 0)

• (1 , 6)

Given the graph of y ≥ 2x - 5 below, which of the following ordered pairs satisfies the inequality?

• (2, -5)

• (2, 2)

• (-2,-7)

• (5, -7)

Which of the following is a function?

• {(1, 2), (2, 3), (1, 4)}

• {(2, 3), 3, 5), (3, 6)}

• {(3, 5), (4, 6), (5, 7)}

• {(4, 7), (5, 8), (4, 9)}