Question and answer
What is the solution of the system? Use elimination. 3x – 4y = 9 –3x + 2y = 9 A. (3, 9) B. (–27, –9) C. (–3, –6) D. (–9, –9)
Question
Asked 4/4/2014 2:02:36 PM
Updated 6/5/2014 9:24:16 PM
4 Answers/Comments
This conversation has been flagged as incorrect.
Flagged by yeswey [6/5/2014 9:18:03 PM]
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Original conversation
User: What is the solution of the system? Use elimination. 3x – 4y = 9 –3x + 2y = 9 A. (3, 9) B. (–27, –9) C. (–3, –6) D. (–9, –9)

Weegy: D. ( 9, 9)
selymi|Points 13974|

User: How many solutions does the system have? x = -4y + 4 2x + 8y = 8 A. one solution B. two solutions C. infinitely many solutions D. no solution

Weegy: The answer is D. no solution
alfred123|Points 11236|

User: What is the solution of the system? Use elimination. 3x – 4y = –24 x + y = –1 A. (3, 4) B. (–4, 3) C. (0, 6) D. (4, 3)

Weegy: The answer is A. ( 4, 3).
Polio123|Points 357|

User: What is the solution of the system? Use a graph. y = –3x + 2 y = –3x + 4

Weegy: y = 3x + 1
Geometric figure is line.
Plots:
(x from -0.36 to -0.31)
(x from -0.6 to 0.6)
-3x+y-1=0



Question
Asked 4/4/2014 2:02:36 PM
Updated 6/5/2014 9:24:16 PM
4 Answers/Comments
This conversation has been flagged as incorrect.
Flagged by yeswey [6/5/2014 9:18:03 PM]
New answers
Rating
3
3x – 4y = 9
–3x + 2y = 9
adding up equations the result is:
-2y = 18
y = -9,
3x - 4(-9) = 9
3x + 36 = 9
3x = 9 - 36 = -27
x = -9
The solution for the system 3x – 4y = 9, –3x + 2y = 9 is (–9, –9)
Added 6/5/2014 9:17:49 PM
This answer has been confirmed as correct and helpful.
Confirmed by yumdrea [6/5/2014 9:44:07 PM]
3
x = -4y + 4
2x + 8y = 8
using the first equation to institute x in the second equation:
2(-4y + 4) + 8y = 8
-8y + 8 + 8y = 8
-8y + 8y = 8 - 8
0 = 0
therefore, there are infinitely many solutions for the system x = -4y + 4, 2x + 8y = 8.
Added 6/5/2014 9:19:51 PM
This answer has been confirmed as correct and helpful.
Confirmed by yumdrea [6/5/2014 9:44:23 PM]
3
3x – 4y = –24 (equation 1)
x + y = –1 multiple 4 on both sides the result is:
4x + 4y = -4 (equation 2)
adding up equation 1 and equation 2 the result is:
7x = -28
x = -4
y = -1 - x = -1 - (-4) = -1 + 4 = 3
The solution for the system 3x – 4y = –24 x + y = –1 is (-4, 3)
Added 6/5/2014 9:22:30 PM
This answer has been confirmed as correct and helpful.
Confirmed by yumdrea [6/5/2014 9:44:23 PM]
3
y = –3x + 2
y = –3x + 4
institute y in the second equation:
-3x + 2 = -3x + 4
-3x + 3x = 4 - 2
0 = 2 which is a false statement
Therefore, there are no solution for the system y = –3x + 2 y = –3x + 4.
If you graph the two lines you can tell they are parallel lines and dont have intersections (solutions)
Added 6/5/2014 9:24:16 PM
This answer has been confirmed as correct and helpful.
Confirmed by yumdrea [6/5/2014 9:44:33 PM]
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Questions asked by the same visitor
What are the slope and y-intercept of the graph of the given equation? y = –4x + 2
Question
Updated 4/5/2014 8:41:28 AM
1 Answer/Comment
The slope and y-intercept of the graph of the given equation y = –4x + 2 is slope = -4, y intercept = 2.
Added 4/5/2014 8:41:28 AM
This answer has been confirmed as correct and helpful.
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