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Find k, If B (k, - 5), C (1,2) and slope...

Find k, If B (k, - 5), C (1,2) and slope of the line is 7.

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B (k, -5) and C(1,2)
Slope of line BC = 7
Slope of line ` BC (2-(-5))/(1-k)`
` therefore y (2 =5)/(1 -k) therefore 7 = (7)/(1-k)`
` therefore 7 (1-k) = 7 therefore 1 - k = (7)/(7)`
` therefore 1-k =1 therefore - k = 1 -1`
` therefore - k = 0 therefore k = 0 `
k = 0
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