Question 650201
f(x) = x-1 if x > 5

OR

f(x) = -(x-1) if x<(or equal)5


So we use the second definition since x = 5 satisfies {{{x<=5}}}


f(x) = -(x-1)


f(5) = -(5-1)


f(5) = -(4)


f(5) = <font color="red">-4</font>