Question 55118
The slope of the perpendicular line will be the negative inverse of the slope of your line.  Because your line's slope is {{{2/3}}}, that means the perpendicular line's slope is {{{-expr(3/2)}}}.  Using substitution into the formula y=mx+b, where b is the y-intercept, your equation becomes {{{y=-expr(3/2)x+3}}}.