SOLUTION: solve the equation by graphing. y=2x+1 , x+2y=7 ~thank you so much
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-> SOLUTION: solve the equation by graphing. y=2x+1 , x+2y=7 ~thank you so much
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Algebra: Graphs, graphing equations and inequalities
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Question 458882
:
solve the equation by graphing. y=2x+1 , x+2y=7
~thank you so much
richwmiller(17219)
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Solved by
pluggable
solver:
Solve the System of Equations by Graphing
In order to graph these equations, we need to solve for y for each equation.
So let’s solve for y on the first equation
Subtract
from both sides
Rearrange the equation
Divide both sides by
Break up the fraction
Reduce
Now lets graph
(note: if you need help with graphing, check out this
solver
)
Graph of
So let’s solve for y on the second equation
to both sides
Rearrange the equation
Divide both sides by
Break up the fraction
Reduce
Now lets add the graph of
to our first plot to get:
Graph of
(red) and
(green)
From the graph, we can see that the two lines intersect at the point (
,
) (note: you might have to adjust the window to see the intersection)

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