Question

The number of circles that touches all the three lines x+y-1=0,x-y-1=0 and y+1=0 is​

Answer 1

Answer:

1

Step-by-step explanation:

x+1-1=x=1 y=0

so, 1+0-1=0

x-y-1=x=1 y=0

so, 1-0-1=0

y+1=y=0

so, 0+1=1