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Posted by on Friday, September 13, 2013 at 11:13pm.

What's the equation of the line containing the given pair of points.
(1,4) and (3,5)

  • Math - , Saturday, September 14, 2013 at 12:01am

    Easiest way:

    slope = 1/2

    so the equation must be
    x - 2y = c
    but (1,4) lies on it, so
    1 - 8 = c = -7

    x - 2y = -7

    or:

    slope = 1/2
    so the equation is
    y = (1/2)x + b
    but (1,4) lies on it, so
    4 = (1/2)(1) + b
    4 - 1/2 = b
    b = 7/2

    y = (1/2)x + 7/2 , which is the same as my first equation.

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