Answer
No. (15,0) will not lie within the standard viewing rectangle, while (3,5) and (-3,-5) will lie within the standard viewing rectangle.
Work Step by Step
If both the x and y coordinates are in between -10 and 10, the ordered pair will lie within the standard rectangle. Since (15,0) has an x-coordinate that is greater than 10, the ordered pair will lie outside of the viewing rectangle.