Question

What is the slope of a line that perpendicular to the line shown on the graph -4,-1/4,1/4

Answer 1

If the line has a slope of 4, then a line perpendicular to it would have a slope of -1/4.
If the line has a slope of -4, then a line perpendicular to it would have a slope of 1/4.
The relation of slopes between two perpendicular lines is m1*m2=-1