Find center on y=1/3x+6, tangent to y=x+20(11;9)

Answer 1

hmmm. I see a couple of straight lines, and what may be a point. I fail to see any circles or other curves involved.

Maybe a little more explanation will help.

Do you want the equation of a circle whose center is on y=1/3x+6, and is tangent to y=x+20?

If so, where does (11,9) come in?

Answer 2

the given is 0.33x+16, tangent to y=x+20(11,9)

Answer 3

yeah, you already said that. But what does

tangent to y=x+20(11,9)

mean?