The point (-3,-5) is on the graph of a function. which equation must be true regarding the function

The complete question in the attached figure

we know that

if the point (-3,-5) is on the graph of a function f(x)
that means 
for x=-3----------> f(x)=-5
so
for x=-3---------> f(-3)=-5

hence

the answer is
the option a.) f(–3) = –5