Periodic Test in Mathematics 8

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

• 10 + 4a > 2b

• 3x < x – 5

• 7y ≥ 14

• 6x + y = 8

The geometric representation of a linear inequality is __________.

• Intersecting lines

• Plane or half-plane

• Coinciding lines

• Parallel lines

Which of the following is not a solution to the inequality 2x + 3y < 6?

• (3,2)

• (0,0)

• (3,0)

• None of the above

The type of line use in graphing inequalities if the given inequality is < or >.

• Solid line

• broken line

• curve line

• straight line

What is the best inequality statement to represent the expression: "To get a “developing” (passing mark) in school, a student must have a grade (G) of at least 75"?

• G > 75

• G < 75

• G ≥ 75

• G ≤ 75

Which of the following best illustrate the graph of 4x – 3y ≥ 12?

• Graph 1

• Graph 2

• Graph 3

• Graph 4

Which ordered pairs satisfy the system of inequalities 3x – 2y ≤ 6 x – 2y ≥ 4?

• (-2, -4)

• (1, 2)

• (2, -3)

• (4, 2)

A function is

• The number in an ordered pair

• A set of ordered pairs in which each x-value corresponds to exactly one y-value

• A pair of numbers between parentheses in which order matters

• The set of all ordered pairs that satisfy an equation

The line used to test whether the graph denotes a function or relation

• Broken Line

• Horizontal Line

• Straight Line

• Vertical Line

Which of the following sets of ordered pairs describe a function?

• { (2, 2), (3, 2), (4, 2), (5, 2) }

• { (-2, 0), (0, -2), (0, 2), (2, 0) }

• { (0, 0), (2, -2), (2, 2), (3, 3) }

• { (2, 3), (2, 4), (2, 5), (2, 6) }