Grade 9 Mathematics Quiz on Equations

What is an equation?

• A type of function

• A numerical expression

• A method of solving problems

• A statement that two mathematical expressions are equal

Which of the following is an example of a quadratic equation?

• x^2 + 5x + 6 = 0

• 2x + 3 = 5

• x - 4 = 0

• 3x + 2y = 6

What is the first step in solving equations involving radicals?

• Add the same number to both sides

• Factor the equation

• Square both sides

• Isolate the radical expression

When raising both sides of an equation to an even power, what may occur?

• The equation becomes simpler

• Extraneous solutions may be introduced

• No changes occur

• The solutions are always correct

What is the solution set of a system of linear equations?

• The intersection of the two graphs

• None of the above

• Only the first equation's solutions

• All ordered pairs that satisfy both equations

Which of the following represents a system of linear equations?

• x + y = 0

• y = mx + b

• x^2 + y^2 = 1

• 2x + y = 3 and 3x - 2y = 1

What is the general form of a linear equation in two variables?

• Ax + By = C

• y = mx + b

• x + y = k

• x^2 + y^2 = r^2

What does the term 'simultaneous equations' refer to?

• Equations that are linear

• Equations that are independent

• Equations that have no solutions

• Equations that are solved at the same time

Which of the following is a characteristic of a unique solution in a system of equations?

• The lines intersect at one point

• The lines coincide

• There are no solutions

• The lines are parallel

What is the result of solving the equation 5x - 3 = 2?

• x = 1

• x = 2

• x = 0

• x = 3