Which of the following are true of f(x)?
f(x) is read as “f of x”
f(x) is the horizontal distance on the graph.
f is the graph at a particular value of x.
f(x) is a whole number.
y is equal to f(x)

True:
1) F(x) is read as "F of x".
3) F is the graph at a particular value of x.
5) y is equal to F(x).

1) F(x) is read as "F of x", then first is true.
2) F(x) is the vertical distance on the graph, then second is false.
3) F is the grap at a particular value of x, then third is true.
4) F(x) can be any real number, then fourth is false.
5) y is equal to F(x), then fifth is true.