Question

Line AB contains points A(1,2) and B(-2,6).The slope of line AB is

A) zero

B)undefined

C) positive

D) negative

Answer 1

(1,2)(-2,6)
slope = (6 - 2) / (-2 - 1) = -4/3....slope is negative

Answer 2

d) negative 
(6-2)
--------
(-2-1)

you get; 4
         -  ------
              3