Determine whether the graphs of the given equations are parallel, perpendicular, or neither. explain.

y= x+ 11
y= -x + 2

Y=x+11
and 
y= -x+2

Perpendicular means they do not touch,

These will most likely not touch seeing as your slopes, one is a negative and the other is a positive, and 11, to 2 that being your y- intercept these still would not touch from my understanding. Hope this helps!

Skew lines(segments) are lines(segments) in 3 dimensions that do not intersect the given segment and are not parallel to it.  ae, bf, eg, and fh are your skew segments.  i hope that : )