Math 8 Q3 Quiz Bee

Which of the following is a system of linear equations in two variables?

• 3x = 7

  2x - y = 4

• 4x - 3 = 6

  x + 2y = 3

• x² + y² = 1

  x - y = 2

• 2x + 3y = 5

  x - y = 2

Which of the following ordered pairs satisfies the given system of linear equation?

• (3, 5)

• (-3, -5)

• (3, -5)

• (-3, 5)

All are graphs of the system of linear equations in two variables EXCEPT:

• coinciding lines

• intersecting lines

• parabola

• parallel lines

What is the solution to this system?

  What similarities and differences can you see in the equation y=2x+3 and y=2x-1?

• Both equations have the same slope and differ in the y-intercepts.

• Both equations have the same y-intercept and they differ in their slope

• Both equations have the same slope and y-intercepts.

• None of these

17. Which method is best to apply to solve the system?

• a. algebraic

• b. elimination

• c. graphical

• d. substitution

What do you call the graph of a system of linear equations in two variables which shows only one solution?

• coinciding

• intersecting

• parabola

• parallel

Which system of linear equations has coinciding graphs?

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• 
• 
• 

What do you call the process of adding the equations to eliminate either x or y from the system of linear equations?

• cancellation

• elimination

• graphing

• substitution

Which of the following equations can best be solved using elimination by addition?

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•