Question 1113244
 Find the equation of the line passing through the point (2, 1) and
perpendicular to the line 2y = 7 – x 
---------------
Find the slope of 2y = 7 – x
The slope of lines perpendicular, m, is the negative inverse of the slope of 2y = 7 – x
--------
Use y-y1 = m*(x-x1) where (x1,y1) is the point.