2014
Mathematics
67ca00ce0c643c71d77dee1f
The gradient of a line joining (x,4) and (1,2) is 1/2 . Find the value of x
A.
5
B.
3
C.
-3
D.
-5
Correct Answer: 5
Explanation
Gradient m=y2 −y1 /x2 −x1 1/2 = (2−4)/(1−x) 1 - x = 2(2 - 4) 1 - x = 4 - 8 1 - x = -4 -x = -4 - 1 x = 5
Gradient m=y2 −y1 /x2 −x1 1/2 = (2−4)/(1−x) 1 - x = 2(2 - 4) 1 - x = 4 - 8 1 - x = -4 -x = -4 - 1 x = 5THIS WEEK's
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