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    Question

    If the points A(1, 2), B(0, 0) and C(a, b) are

    collinear, then
    A a = 2b Correct Answer Incorrect Answer
    B 2a = b Correct Answer Incorrect Answer
    C a = –b Correct Answer Incorrect Answer
    D a = b Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Given points A(1,2), B(0,0), and C(a,b) are collinear. Condition for Collinearity The area of the triangle formed by these points must be zero:

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