Question on: JAMB Mathematics - 2007
What is the value of k if the mid-point of the line joining (1 - k, - 4) and (2, k + 1) is (-k , k)?
A
-3
B
-1
C
-4
D
-2
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Correct Option: A
(1-k+2) / 2 = - k and -4 + k + 1 = k
3-k = -2k and -3 + k = 2k
K = -3 and k = -3
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