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Find the equation of the line joining (1, 2) and (3, 6).
A2x + y = 4
B2x - y = 0
Cx - 2y = 0
Dx + 2y = 5
Answer & Solution
Correct answer: B. 2x - y = 0
The slope is 2 and the line passes through (1, 2), so y - 2 = 2(x - 1), i.e. 2x - y = 0.
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