funguy9198
23.07.2019 •
Mathematics
Given that p||q and r||s find the measure of 15
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Ответ:
Ответ:
the equation of the parabola is y2=12x
explanation:
the vertex is midway between the focus ad the directrix
so, the vertex is (0,0)
let p=(x,y) be a point on the parabola.
the distance of p from the directrix is equal to the distance from the focus.
x+3=√(x−3)2+(y−0)2
(x+3)2=(x−3)2+y2
x2+6x+9=x2−6x+9+y2
y2=12x
graph{y^2=12x [-10, 10, -5, 5]}