Help please????
What is the equation of a parabola with vertex (0, 0) and a focus at (2, 0).

Question

Help please????
What is the equation of a parabola with vertex (0, 0) and a focus at (2, 0).

anonymous · Answer

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campbell_st · Answer

what is the distance from the vertex to the focus..?

anonymous · Answer

2?

campbell_st · Answer

great that distance is called the focal length

the focus is to the right of the vertex so the parabola is concave right 

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so a general form of this parabola is 

$$(y - k)^2 = 4a(x - h)$$

where (h, k) is the vertex and a is the focal length... 

so any thoughts on the equation... after you substitute what you know...?