MFM2P CHAPTER 5 REVIEW

Which of the following is NOT a method of solving a system of linear equations?

• graphing

• substitution

• guessing

• elimination

If you have a matching pair for elimination and they are both the same sign (ie. 2y and 2y), we should...

• add the two equations

• subtract the two equations

• multiply the two equations

• divide the two equations

Solve the following system of linear equations: 7x + y = -9 and -3x - y = 5.

• (0,-9)

• (-2,5)

• (-1,-2)

• (2,-23)

Solve the following system of linear equations: -9x - 4y = -20 and 5x + 4y = 4.

• (0,5)

• (4,-4)

• (2,\frac{1}{2})

• (-4,14)

Solve the following system of linear equations: y = -4x + 5 and y = 3x - 16.

• (3,-7)

• (2,-3)

• (0,5)

• (5,-15)

Solve the following system of linear equations: 5x + 4y = -14 and y = -7x - 15.

• (2,-1)

• (2,1)

• (-2,1)

• (-2,-1)

Solve the following system of linear equations: 2x + 3y = 12 and 4x - 7y = -54.

• (-3,6)

• (0,4)

• (-6,0)

• (3,2)

Solve the following system of linear equations: 3x + y = 19 and 2x - y = 6.

• (6,1)

• (5,4)

• (0,19)

• (4,7)

Determine the number of solutions in the following linear systems: 4x + y = 6 and 8x + 2y = -8.

• 0
• 1
• 2
• infinite

Determine the number of solutions in the following linear systems: -4x - 4y = 0 and 4x + 4y = 0.

• 0
• 1
• 2
• infinite