You can put this solution on YOUR website! Table
x=0 y=-2(0)=0
x=1 y=-2
x=-1, y=(-1)(-2)=2
Three points are enough to graph.
This has y-intercept of 0 because y=-2x has no "b" afterward.
The slope is -2, so it goes over left 1 and up 2 or over right 1 and down 2.