# Question: let sxy r2 y2 be the set of points...

###### Question details

Let S={(x,y) R^{2} :
y-2} be the set of
points for a plane . A line
of is any nonempty
subset of the form for
any real numbers a, b, and c such that either a or b is
nonzero. Prove that is not an affine
plane.