SOLUTION: E=(-4,K) AND F=(K,7) THE SLOPE OF EF IS 2/3, SOLVE FOR K

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Question 171880: E=(-4,K) AND F=(K,7) THE SLOPE OF EF IS 2/3, SOLVE FOR K
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
E=(-4,K) AND F=(K,7) THE SLOPE OF EF IS 2/3, SOLVE FOR K
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slope = (7-K)/(K+4) = 2/3
Cross-multiply to get:
3(7-K) = 2(K+4)
21-3K = 2K+8
5K = 13
K = 13/5
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Cheers,
Stan H.