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Question 829338: (3x+2y=5) (-x+5y=7) use determinants ( D and possibly Dy) state how many solutions exist.
Answer by TimothyLamb(4379)   (Show Source):
You can put this solution on YOUR website! ---
3x+2y=5
-x+5y=7
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copy and paste the above linear system in standard form into this matrix-method solver:
https://sooeet.com/math/system-of-linear-equations-solver.php
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this system has a unique solution:
x = 0.64705882
y = 1.5294118
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system matrix
3 2
-1 5
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inverse of system matrix
0.29411765 -0.11764706
0.058823529 0.17647059
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determinant of system matrix = 17
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