Greg is designing the clock face for a homemade clock. using the center of the clock face as the origin, he places the label 12 at the point (0, 5). at what point should he place the label 6?

Given:
Origin of the clock face (0,0)
label 12 point (0,5)

I am assuming that the radius of the clock is 5 units. 

Label 6 should be placed on the point (0,-5). The point of label 12 should be reflected across the x-axis and labeled as 6 of the clock face.