In the rectangular coordinate system, are the points (r,s) and (u,v) equidistant from the origin?
1) r+s=1
2) u=1-r and v = 1-s
1) r+s=1
2) u=1-r and v = 1-s
Answer C.
From 1, r+s=1
or r=1-s and s=1-r
From 2, we know, u=1-r and v=1-s
So, u=s and v=r
Thus they are equidistant from origin.
