Answer
x-intercept=3
y-intercept=-9
Work Step by Step
3x-y=9
3x-3x-y=-3x+9
-y=-3x+9
-(-y)=-(-3x+9)
y=3x-9
Plug this rearranged equation into a graphing utility. From the produced graph you can see that the line crosses the x-axis when x=3 and the y-axis when y=-9.