Question 39279
gradient = (change in y)/(change in x)
gradient = {{{((p+q)-(p-q))/((-a-b)-(a+b))}}}
gradient = {{{(p+q-p+q)/(-a-b-a-b)}}}
gradient = {{{(2q)/(-2a-2b)}}}
gradient = {{{(2q)/(-2(a+b))}}}
gradient = {{{(-q)/(a+b)}}}


jon.