Question

consider the equation of a circle x2-2x+y2-4y-4=0. If the line is 2x-y+a=0 is its diameter. Then find the value of a.
i need the answer ​

Answer 1

Answer:

a=o

Step-by-step explanation:

The circle is (x-1)^2 + (y-2)^2 = 9

so its center is at (1,2)

So you need 2*1-2+a = 0

a=0