Assuming the points (1,2),(4,m),(5,6) are collinear, the value of m is?
- 5
- 4
- 3
- None of these
Explanation
For collinear points, slope between any two pairs is equal:
Slope(1,2) & (4,m) = Slope(4,m) & (5,6)
(m-2)/(4-1) = (6-m)/(5-4)
(m-2)/3 = 6-m
m-2 = 18-3m
4m = 20
m = 5
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