Find the equation of a line, in slope intercept form of a line that passes through the point (9,2) and is perpendicular to the line 2x-y=8
y= -2x +8 slope = -2 perpindicular slope = -1 / -2 = 1/2
y = 1/2 x +b sub in the given point
2 = 1/2 (9) + b b= -2.5
y = 1/2 x -2.5