Question

What is the slope of a line perpendicular to MN for M(-3, 4) and N(5, -8)?

Answer 1

m = 2/3

Explanation:

Slope = (y-y)/(x-x)

(-8-4)/5- -3) = -12/8

-12/8 = -3/2

Slope od the perpendicular line= 2/3

Answer 2

slope of the line perpendicular to MN = 2/3

Explanation:

slope = y2 - y1 / x2 - x1

the given co-ordinates are:

x1, y1 = -3, 4

x2, y2 = 5, -8

slope = -8 - 4 / 5 + 3

= -12/8

= -3/2

slope of the line perpendicular to MN = -1 / slope

= -1 / -3/2

= -1 * -2/3 = 2/3