What is the value of k if the mid-point of the line joining (1 – k, – 4) and (2, k + 1) is (-k , k)?
-
-3
- -1
- -4
- -2
The correct answer is: A
Explanation
(1-k+2) / 2 = - k and -4 + k + 1 = k3-k = -2k and -3 + k = 2k
K = -3 and k = -3