Step-by-step explanation:

The slope is undefined because you need a y intercept as well.
Answer:

Step-by-step explanation:
To find the equation of this circle, we must know the center and the radius.
We can find the radius by dividing the value of the distance formula by 2 (since
):

We can then find the center of the circle by averaging the coordinates:


Then, we substitute these values into the equation of a circle:

Answer:
I think it is a) exponential
I believe it’s true not 100% sure