Question 549849: using the graphing method how do you do y=3, x+y=5 Please help me and how to do it. Thank You.
Found 2 solutions by stanbon, Edwin McCravy:
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! using the graphing method how do you do y=3, x+y=5 Please help me and how to do it.
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Graph y = 3 as a horizontal line passing thru all points where y = 3.
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Solve x + y = 5 for "y":
y = -x+5
Plot two points:
(0,5) and (5,0)
Draw a line thru them.
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Solution:
Find the point where y =3 meets y = -x+5
Answer: (2,3)
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Graph:
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Cheers,
Stan H.
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Answer by Edwin McCravy(20054)  (Show Source):
You can put this solution on YOUR website!
y=3, x+y=5
Since y=3 is given, that means that anywhere you see y,
you can put 3 in place of it.
So put 3 in place of y in this:
x+y=5
and you get
x+3=5
And you can see that 2 is the only number x could be. So
y=3 and x=2
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You can also solve
x+3=5
by adding -3 to both sides:
x + 3 = 5
-3 -3
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x = 2
Edwin
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