Move all terms to the side of the answer x = -8/7 Hope this helps! ;D
We're looking for
such that
, which requires



Integrating both sides of the first PDE wrt
gives

Differenting this wrt
gives


but we're assuming
is a function that doesn't depend on
, which is contradicted by this result, and so there is no such
and
is not conservative.
It would take 55 hours until Ellie and Justin meet. This is found in the equation y=55h aka y=55x.
Answer: y=55h
Credit to: @Hayley67
live, live, live
What diagram? Mdmdjfkdcdnx