# How do you find the equation of a circle with centre (5,4) and just touches the x-axis?

##### 1 Answer

Jul 20, 2016

The equation of a circle with centre in

#### Explanation:

We know that the centre is

graph{(x-5)^2+(y-4)^2=16 [-5.79, 14.21, -1.16, 8.84]}

Then the radius is 4, and the equation is: