Mrs. Hermanson's Elimination Review

What is the ZERO PAIR in the following system of equations?

• 4x and -5x

• 6y and -6y

• -8 and 10

• There are no zero pairs in this system.

The 2nd step says to add like terms of both equations. What is the new equation after adding these?

• -x - 12y = 18

• 9x + 12y = 18

• -x + 0 = 2

• 0 + 12y = 2

For the following system of equations, x = ___? (solve the equation from the previous question.)

• x = -2

• x = 2

• -x = 2

• x = 18

Now that we know that x = -2, what do we do?

• Plug -2 into

  4( ) + 6y = -8

  then solve for y.

• Plug -2 into

  -5( ) - 6y = 10

  then solve for y.

• It doesn't matter which original equation you plug -2 into. Just choose the easiest one.

• All of these options are correct.

After you plug in -2 for x in one of the equations, solve for y. What is the final solution for this system of equations?

• (-2, -16)

• (-2, -2.66)

• (-2, 0)

• (0, -2)

What is the ZERO PAIR in the following system of equations?

• 8x and -8x

• 1y and 1y

• 10 and 10

• There are no zero pairs in this system.

The 2nd step says to add like terms of both equations. What is the new equation after adding these?

• 16x + 2y = 20

• 0 + 2y = 20

• 0 = 10

• 16x + 0 = 20

For the following system of equations, y = ___? (solve the equation from the previous question.)

• y=20

• y=18

• y=5

• y=10