Answer:
The lines are neither parallel nor perpendicular.
Step-by-step explanation:
Slope of line through (1,2) and (3,1) = (1-2)/(3-1) = -½
Slope of line through (0,-1) and (2,0) = (0-(-1))/(2-0) = ½
The slopes are not the same, so the lines are not parallel.
The product of the slopes is not -1, so the lines are not perpendicular.
