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December2015 cs Q32

0. The end points of a given line are (0, 0) and (6, 18). Compute each value of y as x steps from 0 to 3, by using equation of straight line:

  • Option : A
  • Explanation : A is the ans equation of line passing through 2 points (x1,y1) ,(x2,y2) is

    y-y1=(y2-y1)*(x-x1)/(x2-x1)

    so here eqn of line is y-0=(18-0)(x-0)/(6-0) =>y=3x

    so when x=0 y=0

    x=1 y=3

    x=2 y=6

    x=3 y=9 hence ans is A

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