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9 December, 06:00

The equation of line a is y=-1/4x+3 if line b runs perpendicular theough (2,6) what would be the equation of line b?

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  1. 9 December, 07:25
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    The formula of this perpendicular line is y = 4x - 2

    Step-by-step explanation:

    In y = - 1/4x+3 the gradient is - 1/4.

    If two lines are perpendicular, then their gradients will multiply together to give - 1.

    Use this to find the gradient a of the perpendicular line.

    -1/4 * a = - 1

    a = - 1 * - 4 so the gradient a of the perpendicular line = 4.

    Substitute (2,6) in y = 4x + b, to find the value of b.

    y = 4x + b

    (2,6)

    6 = (4*2) + b

    b = 6 - (8)

    b = - 2

    So now we have our equation.

    The formula of this perpendicular line is y = 4x - 2
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