Question

a(-1,1),b(1,3),c(3,a) are points and if ab=bc,then the value of a
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Answer 1

Answer : a = 7

Given,

         A(-1,1)          B(1,3)           C(3,a)

Also, AB=BC

AB= ((3+1),(1-1)) = (4,0)

BC= ((a-3),(3-1)) = (a-3,2)

Evaluate, 4 = a - 3

                a = 4 + 3 =7

Answer 2

Answer:

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