What is the slope of the line that goes through the points (9.4) and (3,6)?
(m= ..?)


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.

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