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March 29, 2017

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A line is perpendicular to x+3y-4=0 and has the same y-intercept as 2x+5y-20=0. Find an equation for the line

  • Lines and Slopes Math - ,

    Here are two hints:
    (1) The first equation tells you that the slope of the line you are looking for is m = 3. That is because the line you want to be perpendicular to has a slope of -1/3.
    (2) The y-intercept of the line you want is b = 20/5 = 4. The point is located at (0,4)

    y = mx + b

    Substitute in the m and b values from above.

  • Lines and Slopes Math - ,

    y=-1/3x+4

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