example of A system comprising two linear equations in two variables has a unique solution if and only if the straight lines represented by the equations are nonparallel

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Asked 9/11/2012 6:55:43 PM

Updated 12/14/2014 8:18:25 AM

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Flagged by yeswey [12/14/2014 8:15:42 AM]

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Question

Asked 9/11/2012 6:55:43 PM

Updated 12/14/2014 8:18:25 AM

2 Answers/Comments

This conversation has been flagged as incorrect.

Flagged by yeswey [12/14/2014 8:15:42 AM]

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x - 3y = -6

5x + 3y = 42

adding up equations the result is:

6x = 36

x = 36/6 = 6

6 - 3y = -6

-3y = -6 - 6 = -12

y = -12/-3 = 4

The solution for the system x - 3y = -6 5x + 3y = 42 is (6, 4)

5x + 3y = 42

adding up equations the result is:

6x = 36

x = 36/6 = 6

6 - 3y = -6

-3y = -6 - 6 = -12

y = -12/-3 = 4

The solution for the system x - 3y = -6 5x + 3y = 42 is (6, 4)

Added 12/14/2014 8:18:25 AM

This answer has been confirmed as correct and helpful.

Confirmed by sujaysen [12/14/2014 1:35:39 PM]

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