I will try to help you out. The distance between the given point and the line will be determined by the length of the line sement connecting that POINT to the LINE (in your question), and perpendicular to the LINE. To that end, you want to find the equation of a line perpendicular to the LINE and which passes through the POINT. Do you recall the relationship between the slope of lines that are perpendicular to one another (i.e. m1*m2 = -1). If you have the slope and the point the line passes through you can determine the equation of the line. Then just find the intersecting point of this line with your LINE. Use the distance formula between this point and your POINT. wallah!