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Straight line AB is perpendicular to the straight line joining p(-6,-9) and Q(3,-12). Find the gradient of AB

*i need help*π_π
*is the answer in the picture correct? *​

Straight line AB is perpendicular to the straight line joining p(-6,-9) and Q(3,-12). Find-example-1

1 Answer

4 votes
Yes the answer for it is -1/3
User Vinod CG
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