Use the parabola tool to graph the quadratic function f(x)=−x2+4.

Graph the parabola by first plotting its vertex and then plotting a second point on the parabola.

y
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x -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10
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i need on these three questions. find standard form equation of line perpendicular to y = (2/3)x - 8 that goes through the point

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