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  • 關(guān)于有些單詞我已經(jīng)標(biāo)號中文了

    關(guān)于有些單詞我已經(jīng)標(biāo)號中文了
    Find the equation(方程) of a line with each of the following characteristics.
    1.parallel(平行) to the line y = 3x + 5 and has a y-intercept(y截距) of -1
    2.perpendicular(垂直) to the line y = 1⁄3x + 4 and has an x-intercept(x截距) of 2.
    數(shù)學(xué)人氣:316 ℃時間:2019-10-11 00:12:07
    優(yōu)質(zhì)解答
    1.y=3x-1parallel => slope=3y=3x+csubstitute x=0, y=-1 into above equation => c=-12.y=-3x+6perpendicular => slope*1/3=-1 => slope=-3y=-3x+csubstitute y=0, x=2 into above equation => c=6
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