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algebra (parabolas)

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find the axis of symmetry and vertex of the function. tell whether it goes upward or downward.

1. y=-xsquared+9
2. y=-2xsquared=7x-21

  • algebra (parabolas) - ,

    to find the axis of symmetry you must use the formula x=-b/2a which in (1. a=1 b=0 c=9)
    1.x=-b/2a = o/1(2) 0/2 =0 your axis of symmetry would be 0 and to find out if it goes upward or downward you must plug in more numbers to get more cordinates

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