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aedmund1225
30.06.2019 •
Mathematics
What is the equation of the quadratic graph with a focus of (6, 0) and a directrix of y = −10? f(x) = −one twentieth (x − 6)2 + 5 f(x) = −one twentieth (x − 6)2 − 5 f(x) = one twentieth (x − 6)2 + 5 f(x) = one twentieth (x − 6)2 − 5
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Ответ:
Last option is right
f(x) = one twentieth (x − 6)2 − 5
Step-by-step explanation:
Given that it is a quadratic equation
Hence a parabola
Focus = (6,0)
Directrix is y =-10
Since vertex lies exactly in the middle from focus to directrix we have
vertex = (6,-5)
The parabola is having axis perpendicular to directrix and hence axis is x =6
The parabola is open up since focus lies above the directrix.
So equation is
Hence last option is right
f(x) = one twentieth (x − 6)2 − 5
Ответ:
so then your answer will be 115.2 if im wrong let me know or 0.8
Step-by-step explanation: