2007
Mathematics
JAMB
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
Correct Answer: -3
Explanation
(1-k+2) / 2 = - k and -4 + k + 1 = k 3-k = -2k and -3 + k = 2k K = -3 and k = -3
(1-k+2) / 2 = - k and -4 + k + 1 = k 3-k = -2k and -3 + k = 2k K = -3 and k = -3THIS WEEK's
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