What is the equation of the line that contains the point (1,1) and is perpendicular to the line y=2x+1
y=2x+1 has slope 2
The perpendicular lines have slope -1/2
Now you have a slope and a point, so the desired line is
y-1 = -1/2 (x-1)
The perpendicular lines have slope -1/2
Now you have a slope and a point, so the desired line is
y-1 = -1/2 (x-1)