Circles

The circle $C\,$ has the equation $x^2 + y^2 - 8x - 10y + k = 0$ , where $k\,$ is a constant.

Given the $C\,$ lies entirely in the first quadrant, find the range of possible values of $k$ .

[5]

The circle $C\,$ has the equation $x^2 + y^2 - 8x - 10y + k = 0$ , where $k\,$ is a constant.

Given the $C\,$ lies entirely in the first quadrant, find the range of possible values of $k$ .

[5]

Circles Questions