Question 623912
  <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,  
What can be said of points lying on the line  bisecting the 2nd and 4th quadrant?
Note:  Examples given of  (-2,2) and (2,-2) 
points on line  bisecting the 2nd and 4th quadrant are such that x and y have opposite signs and |x| = |y|
{{{drawing(300,300,   -6, 6, -6, 6,  grid(1),
circle(2, -2,0.3),
circle(-2, 2,0.3),

graph( 300, 300, -6, 6, -6, 6,0,-x))}}}