Question: 3. (i) A circle C, has equation x2 + y? + 18x-2y+30=0 The line / is the tangent to C, at the point P(-5, 7).

3. (i) A circle C, has equation x2 + y? + 18x-2y+30=0 The line / is the tangent to C, at the point P(-5, 7). Find an equation of / in the form ax + by + c =0, where a, b and c are integers to be found. (5) (ii) A different circle C, has equation x' + y - 8x+ 12y+k=0 where k is a constant. Given that C, lies entirely in the 4th quadrant, find the range of possible values for k. (4)

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