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Charra [1.4K]
3 years ago
9

Solve the systems by elimination: 8x-2y= -10 -4x+y= 5

Mathematics
1 answer:
Pachacha [2.7K]3 years ago
4 0

Let's eliminate x.  To achieve this, mult. the 2nd equation by 2, obtaining

-8x + 2y = 10.  Now add this result to the first equation:

8x-2y= -10

-8x + 2y = 10

---------------------

        0

The two equations actually represent the same line.   Without an x- or a y-value, we cannot solve for the value of the other variable.  There are infinitely many solutions.

--------------------



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