AnswersGeometryConic Sections

Practice Test Answers

10 verified answers
1
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What are the coordinates of the focus of the parabola?

A
open paren 0 comma 2 close paren
B
open paren negative 2 comma 0 close paren
C
open paren 2 comma 0 close paren
D
open paren 0 comma negative 2 close paren
2
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Which lines best approximate the directrices of the ellipse? Round to the nearest tenth.

A
x is equal to negative 4 point 6 and x is equal to 4 point 6
B
y is equal to negative 4 point 6 and y is equal to 4 point 6
C
y is equal to negative 3 point 5 and y is equal to 3 point 5
D
x is equal to negative 3 point 5 and x is equal to 3 point 5
3

Which features describe the graph of the fraction with numerator y squared and denominator 96 squared minus the fraction with numerator x squared and denominator 40 squared is equal to 1 ? Choose two correct answers.

A
a focus at open paren 104 comma 0 close paren
B
the center at open paren 0 comma 0 close paren
C
a vertex at open paren negative 40 comma 0 close paren
D
a focus at open paren 0 comma negative 96 close paren
E
a vertex at open paren 0 comma 96 close paren
7

The equation the fraction with numerator y squared and denominator 100 plus the fraction with numerator x squared and denominator 4 is equal to 1 represents an ellipse. Which points are the vertices of the ellipse?

A
open paren 0 comma negative 2 close paren and open paren 0 comma 2 close paren
B
open paren negative 2 comma 0 close paren and open paren 2 comma 0 close paren
C
open paren negative 10 comma 0 close paren and open paren 10 comma 0 close paren
D
open paren 0 comma negative 10 close paren and open paren 0 comma 10 close paren
10

What is the length of the transverse axis?

A
9 units
B
24 units
C
12 units
D
18 units

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Practice Test Answers — Geometry