Solving Systems of Equations Quiz

Solve the system: x + y = 10 x – y = 4

• x = 7, y = 3

• x = 6, y = 4

• x = 8, y = 2

• x = 5, y = 5

What is the solution to the equations: 2x + y = 7 x – y = 1

• x = 2, y = 3

• x = 3, y = 1

• x = 4, y = –1

• x = 1, y = 5

Which method eliminates a variable by adding or subtracting the equations?

• Substitution

• Elimination

• Graphing

• Division

Solve the system: 3x – 2y = 6 2x + y = 1

• x = 2, y = –1

• x = 1, y = 0

• x = 0, y = 1

• x = –1, y = –2

The method of substitution involves:

• Adding both equations

• Replacing one variable with an expression

• Dividing both equations

• Multiplying equations

Solve: x + 2y = 8 2x – y = 3

• x = 2, y = 3

• x = 1, y = 4

• x = 3, y = 2

• x = 4, y = 2

Simultaneous equations mean:

• Two or more equations with different variables

• One equation with two variables

• Two or more equations with the same variables

• A single algebraic equation

Solve: x – y = 2 x + y = 6

• x = 4, y = 2

• x = 2, y = 4

• x = 3, y = 1

• x = 5, y = 1

What is the value of y if: x = 2y x + y = 9

• y = 3

• y = 4

• y = 5

• y = 2

Solve for x and y: x + y = 5 x – y = 1

• x = 3, y = 2

• x = 4, y = 1

• x = 2, y = 3

• x = 1, y = 4