Question

I have a question about PS2-1E5. They say the solution is (0, 1, 0). However, I think thats because they accidentally plugged in t=1 instead of t= -1; which would yield (0, -1, 0). I'll attach the problem. Thanks.

Answer 1

you are right, the answer is (0,-1,0)
and not (0,1,0), A quick check shows their point is not on the plane
2x-y+z=1: 0-1+0 \(\ne\) 1

Answer 2

Thanks.