Only one plane passes through $y=x$ and $y=x+1$. If its wrong then why so? Is there any other plane that passes through these two lines?
closed as off-topic by Xander Henderson, Jendrik Stelzner, TheSimpliFire, Namaste, Aretino Aug 25 '18 at 16:44
This question appears to be off-topic. The users who voted to close gave this specific reason:
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If the problem is 2D, there is only one plane and any line lies in it.
If the problem is 3D, you didn't give the equations of two lines !