SOLUTION: SOLVE BY SUBSTITUTION METHOD AND DETERMINE WHETHER ITS A INDEPENDENT, DEPENDENT, OR INCONSISTENT x=2y-7 3x+2y=-5

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Question 124031: SOLVE BY SUBSTITUTION METHOD AND DETERMINE WHETHER ITS A INDEPENDENT, DEPENDENT, OR INCONSISTENT
x=2y-7
3x+2y=-5

Answer by solver91311(24713)   (Show Source): You can put this solution on YOUR website!


Discussion



First off, please stop SHOUTING!
Definitions:
Consistent and dependent: Identical slopes and intercepts, i.e. they are
the same line. Infinite solutions
Consistent and independent: Different slopes. Intersect in one point. One
solution.
Inconsistent: Identical slopes, different intercepts. Parallel lines. No
solution.





Solution





Since you have an expression that is equal to x, i.e. the first equation,
you can substitute this expression for x in the other equation


Solve for y:





Substitute this value for y into the first equation:



So your solution is the ordered pair (-3,2)

Since there is only one solution, the system is consistent and independent.




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