Question 98726
1/x + 1/y = 1/2
xy/x + xy/y = xy/2
y - xy/2 + x = 0
y(1 - x/2) + x = 0
y(2 - x)/2 = -x
y = -2x/(2 - x)
Infinite ordered pairs ... excluding x = 2 and x = 0
{{{graph(300,300,-5,5,-5,5,-2x/(2 - x))}}}