Question

The line y = mx + c will be a normal to the circle with radius r and centre at (a, b), if –

• A. a = mb + c
• B. b = ma + c
• C. r = ma – b + c
• D. r = ma – b

Answer 1

Answer: (B)

b = ma + c

Answer 2

Normal y = mx + c always passes through the centre of circle(a, b) ̃ \ b = ma + c