Please help
Find an equation of the circle that has center (6,-1) and passes through (1,-6)

Question

Please help
Find an equation of the circle that has center (6,-1) and passes through (1,-6)

whpalmer4 · Answer

Okay, do you know the formula for 
a) distance between two points
b) circle with radius $r$ and center at $(h,k)$

Use a) to find the radius
Use b) to find the equation of the circle

anonymous · Answer

No I'm really confused on this one can you please give me more detail

whpalmer4 · Answer

Can you tell me the distance between the points (1,0) and (2,0)?

whpalmer4 · Answer

|dw:1389120140829:dw|

whpalmer4 · Answer

how far are they apart?  1 unit, right?

whpalmer4 · Answer

|dw:1389120226413:dw|

And these two points (1,1) and (1,2) are also 1 unit apart, right?

whpalmer4 · Answer

Slightly trickier but more general case:
|dw:1389120414337:dw|