Science:Math Exam Resources/Courses/MATH103/April 2017/Question 07 (a)/Solution 1

From the hint above, we want to find all the points satisfying the condition $f(c)=c$. That is to say, a fixed point point needs to have the same $x,y$ coordinates and therefore must be located on the line $y=x$. Thus we mark the intersections of $y=f(x)$ and the diagonal $y=x$ (dashed line).