SOLUTION: How would I determine whether the ordered pair is a solution of the system of linear equations? (3,6) 4x + y = -18 3x + 4y = 33

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Question 226595: How would I determine whether the ordered pair is a solution of the system of linear equations?
(3,6) 4x + y = -18
3x + 4y = 33
Answer by drj(1380) About Me  (Show Source):
You can put this solution on YOUR website!
How would I determine whether the ordered pair is a solution of the system of linear equations?
(3,6) 4x + y = -18
3x + 4y = 33

Solved by pluggable solver: SOLVE linear system by SUBSTITUTION
Solve:
+system%28+%0D%0A++++4%5Cx+%2B+1%5Cy+=+-18%2C%0D%0A++++3%5Cx+%2B+4%5Cy+=+33+%29%0D%0A++We'll use substitution. After moving 1*y to the right, we get:
4%2Ax+=+-18+-+1%2Ay, or x+=+-18%2F4+-+1%2Ay%2F4. Substitute that
into another equation:
3%2A%28-18%2F4+-+1%2Ay%2F4%29+%2B+4%5Cy+=+33 and simplify: So, we know that y=14.3076923076923. Since x+=+-18%2F4+-+1%2Ay%2F4, x=-8.07692307692307.

Answer: system%28+x=-8.07692307692307%2C+y=14.3076923076923+%29.



Hello,
You're welcome and glad to be of help in some way.
Good luck in your math studies!
Cheers,
Dr J
For free Step-By-Step Videos on Introduction to Algebra, please visit http://www.FreedomUniversity.TV/courses/IntroAlgebra or for Trigonometry visit http://www.FreedomUniversity.TV/courses/Trigonometry.
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