Graph the function f(x)=x-5. Plot the vertex. Then plot another point on the parabola. If you make a mistake, you can erase your parabola by selecting the second point and placing it on top of the first. f(x) -10 -8 -6 -4 -2 10 8 6 4 4 2 0 -2 -4 -6 -8 10 2 4 10