Math

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Grant wrote an equation of a line through the point (4,1) that is perpendicular to the one shown. What other point lies on his line?

  • Math -

    I have to see the line shown. We need the slope of the line shown.

    Grant's line will have a slope that is a negative reciprocal of the line shown.

    for example if the line has a slope of -3, Grant's perpendicular line will be 1/3.

    To find the other point, use the slope formula: m = (y2-y1)/(x2-x1)

  • Math -

    Another approach is to use:

    y = mx + b

    You will have m, x and y.
    solve for b.

    Write an equation where you have a value for m and b.

    You can then figure out another x and y that will work in that equation.

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