question_answer

The course of an enemy submarine as plotted on a set of rectangular axes is\[2x+3y=5\]. On the same axes the course of the destroyer is indicated by\[x-y=10\]. What is the point \[(x,\,\,y)\] at which the submarine can be destroyed?

A) \[(-7,\,\,3)\]                    

B) \[(-3,\,\,7)\]        

C) \[(3,\,\,-7)\]        

D)        \[(7,\,\,-3)\]