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10th Class Mathematics Coordinate Geometry Question Bank Co-ordinate Geometry

  • question_answer
    If the line whose equation is \[y=x+2k\] passes through point (1, -3), then k is equal to

    A)  -2            

    B)  -1

    C)  1                                            

    D)  2

    Correct Answer: A

    Solution :

                                   We are given that the equation of the line that passes through the point \[(1,-3)\] . We know that the point satisfies the equation of the line that passes through it. Put the value of x and y coordinates of point in the equation of the line                 \[y=x+2k\] \[\therefore \]  \[(-3)=1+2k\] or            \[-3-1=2k\] or            \[-4\,=2k\]


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