y2 - y1
---------- = slope
x2 - x1
(-16,-9) , (-19,-14)
-14 - (-9)
------------- = slope {substituted coordinates into slope formula}
-19 - (-16)
-14 + 9
---------- = slope {simplified double negative signs}
-19 + 16
-5
----- = slope {added on top and bottom}
-3
5
-- = slope {simplified}
3
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