SOLUTION: Method of Substitution 13. Explain why it would be appropriate to solve the following linear system either by substitution or by graphing. x+y=4 y=2x+4 Pleaseeeeeeeeeeeee and t

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Question 181746: Method of Substitution
13. Explain why it would be appropriate to solve the following linear system either by substitution or by graphing.
x+y=4
y=2x+4
Pleaseeeeeeeeeeeee and thankssssssss lotttttttt
I need it today!!!!
Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
x+y=4.......eq 1
y=2x+4......eq 2
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one reason substitution would work well here is because in eq 2, y is already isolated.
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graphing could work but many times graphing is inaccurate in determining the exact solution.
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substitution is MUCH more reliable, although in graphing you get a visual picture of the system and can actually see the lines intersect.