# How do you write an equation for a circle given center in the first quadrant and tangent to x=-3 and x=5 and the x-axis?

##### 1 Answer

Nov 29, 2016

#(x-1)^2+(y-4)^2=16#

#### Explanation:

The diameter of the circle is defined by the distance between (-3, 0) and (5, 0).

The distance from the mid point of the line joining points (-3, 0) and (5, 0) to point (5,0) is the radius of the circle.