Solve equation and find plots

Algebra
Tutor: None Selected Time limit: 1 Day

4x-2y=20

5x+3y=3

Solve using the elimination method (ordered pairs ... if any)

Sep 13th, 2015

Thank you for the opportunity to help you with your question! IF you have any clarification, please don't hesitate to ask and I will do my best to answer. ++++++++++++

4x-2y=20

5x+3y=3

9x+y=23 => y = 23-9x

4x-2y=20 => 4x – 2(23-9x) = 20 => 4x – 46 + 18x = 20 => 4x + 18x – 46  = 20 => 22x – 46 = 20 => 22x = 20 + 46 => 22x = 66 => x = 66/22 = x = 3

4x-2y=20 => 4(3) – 2y = 20 => 12 – 2y = 20 => 2y = 12 – 20 => 2y = -8 => y = -8/2 => y = -4

(x, y) = (3, -4)

Proof:

5x + 3y = 3 => 5(3) + 3(-4) = 3 => 15 – 12 = 3


Please let me know if you need any clarification. I'm always happy to answer your questions.
Sep 13th, 2015

Did you know? You can earn $20 for every friend you invite to Studypool!
Click here to
Refer a Friend
...
Sep 13th, 2015
...
Sep 13th, 2015
May 26th, 2017
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer