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nataly862011 [7]
3 years ago
5

For the quadratic equations shown here, which statement is true?

Mathematics
1 answer:
Marina86 [1]3 years ago
8 0

Answer:

  1. opens upward; axis of symmetry is x = 5
  2. opens upward; axis of symmetry is x = 5
  3. opens upward; axis of symmetry is x = 5
  4. opens downward; axis of symmetry is x = 5

Step-by-step explanation:

The equation of a quadratic in vertex form is ...

  y = a(x -h)² +k

The coordinates of the vertex are (h, k), which means the axis of symmetry is x=h. All of your equations have h=5, so their axis of symmetry is x = 5.

__

For a > 0, the parabola opens upward; for a < 0, it opens downward. The first three equations have a > 0, so open upward. The last one opens downward.

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