SOLUTION: How do I determine whether (3,8) is a solution of: 7x+5y=8

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Question 270766: How do I determine whether (3,8) is a solution of:
7x+5y=8
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


is an ordered pair of the form . That tells us that must equal 8 whenever is equal to 3.

You can proceed one of two ways:

1. Substitute 3 for in the equation:



and then solve for . If you end up with then is a solution to the given equation. Otherwise not.

2. Substitute 3 for and 8 for in the equation.



And then do the arithmetic. If you end up with a true statement, then is a solution to the given equation. Otherwise not.


John