Hey!
I find this topic difficult for a reason :/
I've got a question which says:
"The circle C has centre (-3,2) and passes through the point (2,1)
a) find an equation for C
b) show that the point with co-ordinates (-4,7) lies of C
c) Find an equation for the tangent to C at the point (-4,7). Give your answer in the form ax+by+c = 0, where a, b and c are integers.
PLEASE HELP GUYS!!!! IT DROVE ME MAD WHILE TRYIN TO ANSWER IT!
