Does anyone know the answer for this ?

Part a: select all of the ordered pairs that are located on the graph of the equation. part b: does the graph of the equation represent a function? select all correct answers for part a and one answer for part b.

Which is the graph of f(x) = (4)x? image for option 1 image for option 2 image for option 3 image for option 4

Polynomial that can be factored as (3x-4)(3x+4)