1st group Parallel. Slope the same 2
Y= 2x+5. Y=2x+4
2nd group perpendicular slope 4 and -1/4 opposite sign and reciprocal
Y-= 4x+2. Y= -1/4c+2
3rd group parallel slope the same -1/2
Y= -1/2x-2/3. Y= -1/2x-3
4th group neither slope different one is 3 other 4
Y=3x-12. Y= 4x+12