SOLUTION: Solve the system of equations by graphing. Then classify the systems as consistent or unconsistent and the equations as dependent or independent 3u+v=15 3u+v+33

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Question 145809: Solve the system of equations by graphing. Then classify the systems as consistent or unconsistent and the equations as dependent or independent
3u+v=15
3u+v+33

Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!
note: I'm replacing "u" with "x" and "v" with "y"

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


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




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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