﻿ Radical centre of the three circles x2 + y2 = 9, x2 + y2 – 2x – 2y = 5, x2 + y2 + 4x + 6y = 19 lies on the line y = mx if m is equal to   : Kaysons Education

# Radical Centre Of The Three Circles x2 + y2 = 9, x2 + y2 – 2x – 2y = 5, x2 + y2 + 4x + 6y = 19 Lies On The Line y = mx if m is Equal To

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## Question

### Solution

Correct option is

1

The radical centre is the point of intersection of 2x + 2y = 4 and 4x + 6y= 10 i.e. (1, 1) which lies on y = mx if m = 1.

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