i have to write a program that lets the user enter the radius and center of a circle. then the circle has to appear in a picture box using (-10, 10) as the upper-left corner of the graph and (10, -10) as the lower right corner of the graph.

first off i know to draw a circle is the pctGraph.Circle(x, y) , radius

but what do i do with center and what does the (-10,10) and (10,-10) part of the problem mean? i am confused