Question 66964
the line for x=1 is a verticle line through x=1.
thus the perpendicular line has a slope of 0 through y=3/2
{{{ graph( 300, 200, -6, 5, -10, 5, y = 3/2 ) }}} (graph 300x200 pixels, x from -6 to 5, y from -10 to 5, y = 3/2).