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vovangra [49]
4 years ago
8

Solving special systems Y=x+1 -x+y=3

Mathematics
1 answer:
densk [106]4 years ago
3 0
Plug the first equation into the second

-x + (x + 1) = 3
1 = 3

This is obviously false, so that means the two lines are parallel and have no solution

If we rarrange -x + y = 3, we get
y = x + 3

And the first equation was y = x + 1

You can see that both have the same slope but different y-intercepts, which means that the two lines are parallel and have no solution.
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A quick way to solve something that is multiplied by 10^n, simply move the decimal point the same number as n. (For example, 1.6 x 10^3 simply move the decimal to the right 3 times 1600.0)

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Step-by-step explanation:

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