Question 1068758
You can graph them and look for intersection points and then judge which is greater in that interval.
.
.
.
{{{-40=(9/5)(-40)+k}}}
{{{k=-40+40(9/5)}}}
{{{k=40(9/5-1)}}}
{{{k=40(9/5-5/5)}}}
{{{k=40(4/5)}}}
{{{k=32}}}