Systems by Elimination

Multiple Choice

Which variable will cancel out for the following system?

3x-2y=10

-5x+2y=15

• x

• y

• neither

• constant

Multiple Choice

Which variable will cancel out for the following system?

5y + 7x = 14

-5x + 5y = 12

• x

• y

• neither

• constant

Multiple Choice

Given 2x -3y = 12

and x +5y =4

Which option would allow you to solve by elimination?

• Multiply 1st by 5

• Multiply 2nd by 2

• Multiply 2nd by -2

• Multiply 1st by 1

Multiple Choice

Given 2x - 3y = 12

and 3x + 5y = 4

Which option would allow you to solve by elimination?

• Multiply 1st by 5

  and 2nd by -3

• Multiply 1st by 3

  and 2nd by 2

• Multiply 1st by 3

  and 2nd by -2