SOLUTION: Solve the system by graphing. 3x – y = 1 3x – y = 2 please help

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Question 126151: Solve the system by graphing.
3x – y = 1
3x – y = 2
please help

Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!


Start with the given system of equations:







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

Start with the given 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

Start with the given equation


Subtract from 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 are parallel and will never intersect. So there are no solutions and the system is inconsistent.

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