Using the graph below select all statements that are true

a. this is the graph of the greatest integer function

b. f(4.5)=5

c. this graph is one-to-one

d. f(0)=0

e. f(1.4)=1

A definitely has to be one because it's a fact and you need to know what it looks like. B isn't true because the greatest integer function rounds down values. C is also not correct because a one-to-one graph has one x-value for every y-value. This one doesn't. D has to be true because f[0] = 0 because the Greatest Integer Function requires it to be. And E is also correct because that's in the definition of a Greatest Integer Function. So, your answers are A, D and E.