What is the solution of the system? Use elimination. 3x – 4y = 9 –3x + 2y = 9
Question
Updated 11/15/2014 5:05:27 AM
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Original conversation
User: What is the solution of the system? Use elimination. 3x – 4y = 9 –3x + 2y = 9

Weegy: D. (?9, ?9)
selymi|Points 17535|

Question
Updated 11/15/2014 5:05:27 AM
This conversation has been flagged as incorrect.
Rating
8
The solution for 3x – 4y = 9, –3x + 2y = 9 is x = -9, y = -9 .
Equation 1 and equation 2 ,
3x - 3x - 4y + 2y = 9 + 9
-2y = 18
y = -9
3x - 4(-9) = 9
3x + 36 = 9
3x = -27
x = -9
Confirmed by andrewpallarca [11/15/2014 5:08:26 AM], Rated good by andrewpallarca

Questions asked by the same visitor
What is the solution of the system? Use elimination. 3x – 4y = –24 x + y = –1
Weegy: The answer is A. (?4, 3). (More)
Question
Updated 11/15/2014 5:12:39 AM
Use elimination. The solution for 3x – 4y = –24 , x + y = –1 is x = -4 , y = 3 .
Equation 2 multiplied by 3 , we get :
3x + 3y = -3
Equation 1 minus 3x + 3y = -3
3x - 4y - 3x - 3y = -24 - (-3)
-7y = -21
y = 3
x + 3 = -1
x = -1 - 3
x = -4
Confirmed by andrewpallarca [11/15/2014 5:24:41 AM], Rated good by andrewpallarca
What is the solution of the system? Use a graph. y = x + 5 y = –5x – 1
Question
Updated 11/15/2014 4:44:06 AM
The solution for y = x + 5 , y = –5x – 1 is x = -1 , y = 4 .
y - y = x + 5 - (-5x - 1)
0 = x + 5x + 5 + 1
-6 = 6x
x = -1
y = -1 + 5
y = 4 .
Confirmed by andrewpallarca [11/15/2014 5:05:52 AM], Rated good by andrewpallarca
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