Answer :
The slope is the difference in y for every increase in x. So we can divide:
(Y2-y1)/ (x2-x1)
= (6-4)/(3-9)
= 2/-6
= -1/3
Which means that for every increase in x, y decreases by 1/3.
(Y2-y1)/ (x2-x1)
= (6-4)/(3-9)
= 2/-6
= -1/3
Which means that for every increase in x, y decreases by 1/3.