Answer:
The answer is a. -7
Step-by-step explanation:
Given,
[tex]A=(6,3)\\B=(7,-4)[/tex]
We know,
[tex]Coordinate\,\,plane,m=\frac{y_{2}-y_{1} }{x_{2}-x_{1}} \\So,Coordinate\,\,plane\,\,for\,\,AB,m=\frac{-4-3 }{7-6}=\frac{-7}{1}=-7[/tex]
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