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A day full of math games & activities. Find one near you.
What is the equation of the parabola with vertex (3, 4) and focus (6, 4).
Solution:
Given, the vertex = (3, 4)
Focus = (6, 4)
We have to find the equation of the parabola.
Since the vertex and the focus lie on the same horizontal line y = 4.
The equation of the parabola in vertex form is given by
(x - h) = a(y - k)2
Here, h = 3, k = 4
x - 3 = a(y - 4)2
x = a(y - 4)2 + 3
The focus of the parabola is at (3 + (1/4a), 4)
So, 3 + 1/4a = 6
1/4a = 6 - 3
1/4a = 3
1/4 = 3a
a = 1/12
Put the value of a in vertex form,
x = (1/12)(y - 4)2 + 3
Therefore, the equation of the parabola is x = (1/12)(y - 4)2 + 3
What is the equation of the parabola with vertex (3, 4) and focus (6, 4).
Summary:
The equation of the parabola with vertex (3, 4) and focus (6, 4) is x = (1/12)(y - 4)2 + 3.
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