Question

A diameter of a circle x^2+y^2-4x-2y+3=0 passes through (1,3). Find the equation of this diameter (I already found the midpoint, what do I do next?)

Answer 1

you have the mid point which is the center and another point is given, so where is the problem ?

Answer 2

Mm, I'm not so sure how to sub it in the formulas~or which one in the list to use :P

Answer 3

I already got it xD

Answer 4

okay you have m is the slope and equals \[\Delta y /\Delta x\]
and you have y=mx+b you just substitute for any point you like between the two you have and you will get it

Answer 5

Yep yep, got it mate, thanks xD

Answer 6

you are welcome :)