If (4,0) is the vertex and y axis the directrix of a parabola, then its focus is
Rishi Kumar rai , 7 Years ago
Grade 11
Analytical Geometry> If (4,0) is the vertex and y axis the dir...
1 Answers
Saurabh Koranglekar
Last Activity: 5 Years ago
From the question, it is clear that the axis of the parabola is along the positive direction of thex-axis.
Also, we know that distance between the vertex and the directrix is equal to the distance between the focus and the vertex.
Now, according to the problem, the distance between the vertex and the directrix is 4 units.
As the vertex is given to be(4,0)then the focus will be(4+4,0)=(8,0)
Regards
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