Question: find the slope of a line that is perpendicular to the following lines?
Answer: Find The Slope Of A Perpendicular Line : Example Question #3 First rearrange the equation so that it is in slope-intercept form, resulting in y=2/3 x + 14/9. The slope of this line is 2/3, so the slope of the line perpendicular will have the opposite reciprocal as a slope, which is -3/2.