A circle with center (4,-2) contains point (8,1). What is the equation of them line perpendicular to the radius of them circle passing through line c?

Question

I have this geometry question. 

Answer 1

1.  you have said them when the word the would be the correct article, in two places.

2. you can calculate the slope of theradius using the two given points.

3. it's unclear what line c is

4. a line perpendicular to another line has slope equal to the negative reciprocal  of that other line.