Question 1011221
x-intercept is when y=0.  I am assuming this is the line where one wants the x-intercept.  If not, I need a point in order to find the line perpendicular to this one.  The slope is not enough.

The equation then become -3=3(x+1) for the given line.
-3=3x+3
-6=3x
x=-2
(-2,0)