Question

Find the slope of the line containing the points ( a , 1/a ) a n d ( b , 1/b )

Answer 1

Answer:

slope=(y2-y1)/(x2-x1)

=(1/b-1/a)/(b-a)

=((a-b)/ab)/(b-a)

=(a-b)/ab(b-a)

=(a-b)/(-(ab(a-b))

=-1/ab