Answer:
The relationship between the circumference of a circle and its diameter represent a direct variation and the constant of proportionality is equal to the constant 
Step-by-step explanation:
we know that
A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form 
where K is the constant of proportionality
In this problem we know that
The circumference of a circle is equal to

therefore
the relationship between the circumference of a circle and its diameter is a direct variation and the constant of proportionality is equal to the constant 
Don’t take my word for it but if there’s no x then it might be undefined.
Sorry if I’m incorrect
Answer:
True
Step-by-step explanation:
That is the definition of a asymptote. It is approached but will never get to the line.
c.
greater than and less than signs have dotted lines.
greater than or equal to and less than or equal to have solid lines.
The answer is TT=T because why will it be a true or false