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21 February, 10:56

Tell wether the the graph of each quadratic functions opens upward or downward y=-3x^2+4x Y=1-2x+6x^2 Y+x^2=-x-2 Y+2=x^2 Y-2x^2=-3 Y+2+3x^2=1

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  1. 21 February, 14:07
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    Hello,

    all you have to see is the coefficient of x²:

    if positive: upward

    if negative : downward

    y=-3x²+4x = = > - 3: downward

    y=1-2x+6x² = = >6 : upward

    y+x²=-x-2==>y=-x²-x-2 = = > - 1: downward

    y+2=x² = = >1: upward

    y-2x²=-3==>y=2x²-3 = = > 2: upward

    y+2+3x²=1==>y=-3x²-1 = = > - 3: downward
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