Question 903460
the standard slope-intercept form for an equation of a line is 
{{{y = highlight_green(m)x + highlight(b)}}}  where m is the slope and b the y-intercept.
 x/3-y/2=1   0r y = (2/3)x -2,  m = (2/3)
Perpendicular Line to this:  m = -3/2
2a-1 = -3/2
2a =  -1/2
a = -1/4