Posted by S.sinha on .
Find the equation of line making equal and positive intercepts on the cordinate axes and passing through the poin (4.5)

algebra 
Steve,
you know the line is x+y+c=0 and (4,5) is on the line, so
9+c=0
c=9
x+y9=0
the intercepts are (9,0) and (0,9)