A parabola passes through the points (2,8), (6,2), and (8,8). what is the x-coordinate of its vertex?
1 answer:
The x-value of the vertex of the given parabola is x = 5, so the correct option is b.
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How to get the x-value of the vertex?</h3>
If we define the parabola by f(x), by looking at the table, we can read:
So, notice that:
f(2) = f(8).
Then the x-coordinate of the vertex is the midpoint between 2 and 8.
x = (2 + 8)/2 = 5
The x-value of the vertex of the given parabola is x = 5, so the correct option is b.
If you want to learn more about parabolas:
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