algebra
posted by sonia .
find the slope, if it exists of the line containing the pair of points. (19.3, 13.4) and (17.3, 2.1) The slope m= I came up with m= 4 am I close

he slope is just the difference in the ys over the differences in the xs. That is, when you move 1 in the x direction, how far do you move in the y direction.
4 isn't very far off, but it's not the exact answer:
Your Ys are 13.4 and 2.1
Your Xes are 19.3 and 17.3
(Cereful to keep them in the right order, to avoid reversing a sign!)
So your answer is:
(13.42.1) / (19.3  (17.3))