elstone01

11.09.2019 • 

Mathematics

Aparabola can be represented by the equation y2 = –x.
what are the coordinates of the focus and the equation of the directrix?
focus: (negative one-fourth, 0); directrix: x = one-fourth
focus: (one-fourth, 0); directrix: x = negative one-fourth
focus: (–4,0); directrix: x = 4
focus: (4,0); directrix: x = –4

Ответ:

snlawson9053

20.04.2021

Mathematics

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1.-7/4
2.1/7
3.-5/3
4.1/2
5.neither a parallelogram nor a trapezoid
6.neither pair of opposite sides is parallel

hope this help any one who need the answer 

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