The equation 2x-y=8 is graphed in the xy‑plane. Which of the following is a true statement about the graph?
A. The graph's x-intercept is 4 and its y-intercept is -8.
B. The graph's x-intercept is 4 and its y-intercept is 8.
C. The graph has a slope of -2.
D. The graph has a slope of 1/2.