Question 26711
You need to put it in the from;
y=mx+b
where m=slope, b=y-intercept
So the tell you the slope=-2
y=-2x+b
Now to finish the equation you need to put the point given into this formual;
Y-Y1=-2(X-X1)
y-0=-2(x-0)
y=-2x
hope you understand
=)