Line d passes through the points (1, 1) and (5, 6). what is the slope of a line perpendicular to line d?
a -5/4
b -4/5
c 4/5
d 5/4

B -4/5

Step-by-step explanation:

The slope of line D is given by

m = (y2-y1)/(x2-x1)

    = (6-1)/ (5-1)

    =5/4

We want the slope of the line perpendicular

That would be the negative reciprocal

- (4/5)

x

step-by-step explanation:

the square root of what number? if you add that, then someone will probably answer the question.