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math urgent urgent urgent

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perpendicular to line -2x+y=7 contains the point (-4,-2) the equation of line is

  • math urgent urgent urgent -

    -2x+y=7 can be written as
    y=2x+7, so we see it has slope=2

    so, the perpendicular has slope -1/2
    now you have a point and a slope:

    y+2 = -1/2 (x+4)
    and you can massage that as you will.

  • math urgent urgent urgent -

    find intercept
    a circle equation x^2+y^2+4x-4y-1=0 and graph
    2)find domain and range f(x)=x^2-4x-5
    find vertex of f(x) =x^2+4x-21

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