Question

#9: Solve the linear system below using the elimination method. Type your answer as an ordered pair in the form (#,#).

-4x - 9y = -3
- 4x + y = -13
(ALOT OF POINTS WILL BE REWARDED)

Answer 1

• (3, - 1)

Explanation:

Given system:

• - 4x - 9y = - 3
• - 4x + y = - 13

Subtract the equations to eliminate x:

• - 4x - 9y - (-4x + y) = - 3 - (-13)
• - 9y - y = 10
• - 10y = 10
• y = - 1

Find the value of x:

• - 4x - 9(- 1) = - 3
• - 4x + 9 = - 3
• -4x = - 3 - 9
• - 4x = -12
• x = -12 / -4
• x = 3