Answer:
2 units
Step-by-step explanation:
The given equation of the circle is:

The general equation of the circle is:

Comparing the given equation with the general equation we can say:
g = 4
f = -3
c = 21
The formula for radius of the circle is:

Using these values of the given circle, we get:

Therefore, the length of radius of the given circle is 2.
There's no slope, so it's impossible to answer your question. I'm sorry.
Answer:
b
Step-by-step explanation:
Answer:
D. (4,3)
Step-by-step explanation:
I calculated it logically