QR is a diameter and Q(1,8) and C(3.5,2) are points on a coordinate plane. Find and state the coordinates of Point R

The coordinates of point R are .

Step-by-step explanation:

From Geometry we understand that magnitude of Diameter is twice the magnitude of Radius. Vectorially speaking, both radius and diameter are collinear. That is:

(1)

Where:

- Vector radius.

- Vector diameter.

If we know that and , then coordinates of point R are, respectively:

The coordinates of point R are .

true? is that what you're asking or do you mean something else?