Question

http://prntscr.com/5f4ip3

Answer 1

Look like these lines are parallel. What does that mean>

Answer 2

It's not stated very clearly, but it looks like it's asking for a point (x,y) that solves both x-y=-1 and -x+y=-1

Answer 3

Parallel lines:
- no points of intersection, this means how many solutions?
- Same slope
- different y - intercept
_ gives false statements

Pretty much all you need for parallel lines for now.