determine of which lines, if any are parallel or perpendicular explain

line a passes through (--2,1) and (0,3)
line b passes through (4,1) and (6,4)
line c passes through (1,3) and (4,1)

to part one sentence
1 possible answers(none lines a and b lines a and c lines b and c lines a b and c
2possible answers ( the same reciprocals negative reciprocals all different

_______ are parallel, the slopes are_______

part 2 sentence
possible answers ( none of the lines are line a is line b is line c is
possible answers( each other line a line b line c lines a and b lines a and c lines b and c
possible answers( the same reciprocals negative reciprocals not reciprocals not negative reciprocals

sentence 2

__________perpendicular to____the slopes are _______