Item 5 There are 20 balls in a bag. Ten of the balls are red, 4 are green, and the rest are yellow. Which ratio represents the n
1 answer:
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Given:
The equation of a quadratic function is:
To find:
The equation of the axis of symmetry for the given function.
Solution:
If a quadratic function is , then the equation of the axis of symmetry is:
...(i)
We have,
Here, . So, the equation of axis of symmetry by using (i), is
Therefore, the correct option is C.