The number line is a graph of the

a. real numbers

b. integers

c. rational numbers

A number line is a graph of the real numbers

A real number is basically any number you can think of
examples:
2.5
8
sqrt(7) = square root of 7
pi = 3.14
log(101)

The real numbers can be expressed in decimal form, fraction form, as whole numbers, or as complicated expressions such as logs, trig functions, square roots, and so on. 

My answer would be A hope this helps??

Ithink the answer should be b.