Answer:
The graph represents a nonlinear function, because the graph isn't a line.
Reason: A linear function is a graph with a straight line, in this case the graph isn't straight, so it is nonlinear function.
Answer:
It is not a tautology
Step-by-step explanation:
when all values remain true that is called tautolgy.It would be absurdity because all values are going false
Answer:neither, neither, perpendicular , neither
parallel
Step-by-step explanation:put each line in the form y=mx+b
if m=m they are parallel
if m times m = -1 they are perpendicular
if the m’s are unrelated than neither