What is the slope of (-16, -9) and (-19,-14) or is it undefined?

please help me with the above question cannot figure it out. thank you
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1 Answer

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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