Pls help me URGENT!!!!

The graph of a linear function f passes through the point (-4,0) and (2,-8).

Which statement must be true?

A) the slope of the graph is f is -4.

B) the graph of f passes through the point (1,-4).

C) the zero of f is 4

D) the x-intercept of the graph of f is -4.

Pls hurry!!!