Question

Which of the following represents the graph of f(x) = 2x?

Answer 1

you can just let x be any number and graph it manually. Then match the manually drawn graph with the choices you are given

Answer 2

I'll give an example point . If I let x = 1 then I have f(1) = 2(1) = 2
you can draw a table with two columns x and f(x) . That f(x) can be used as your y

Answer 3

so we have the point (1,2) and it's ont he first axis