Question 152479: Systems of equations can be solved by graphing or by using substitution or elimination. What are the pros and cons of each method?
Answer by Fombitz(32388)   (Show Source):
You can put this solution on YOUR website! Graphing gives you a good idea of where the solution but it's not exact.
Elmination and substitution give you the exact answer but it can become tedious and cumbersome.
An example, if the solution is x=3/7 and y=5/7, you'd get close with graphing
(x=0.4, y=0.7 or x=0.43,y=0.71, depending on the fineness of your graphing paper)
but you'd never get the exact answer.
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