04-10-2016
Mathematics

Answered

Solving special systems

Y=x+1

-x+y=3

Verified Answer :

04-10-2016

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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