SOLUTION: Solve the following by either elimination or substitution method: {x = 9/4y + 7 {4x - 9y = 30 Is the system inconsistent, are the equations dependent, or is the solution an o

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Question 183046: Solve the following by either elimination or substitution method:
{x = 9/4y + 7
{4x - 9y = 30
Is the system inconsistent, are the equations dependent, or is the solution an ordered pair?

Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!
I'm going to use the substitution method (as "x" is already isolated)


Start with the second equation.


Plug in


Distribute


Multiply and reduce



Combine like terms on the left side.


Subtract from both sides.


Combine like terms on the right side.


Simplify.


Since this equation is NEVER true for any "y" value, this means that there are no solutions.


So the system is inconsistent.

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