Transformations of Quadratic Functions — Unit test Answers
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When graphed, which parabola opens downward?
A
y = –3x2B
y = (x – 3)2C
y = one-third x squared
D
y = x2 – 322
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Dimitri is solving the equation x2 – 10x = 21. Which value must be added to both sides of the equation to make the left side a perfect-square trinomial?
A
0B
4C
25D
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