Can someone check my answers on exploring conic sections?
1. Graph x2 + y2 = 9. What are its lines of symmetry?
Every line through the center is a line of symmetry.
The y-axis and the x-axis are lines of symmetry.( my choice)
Every line through the center is a line of symmetry.
The y-axis and the x-axis are lines of symmetry.
2. Graph x2 + 9y2 = 25. What are the domain and range?
Domain: ¨C3 ¡Ü x ¡Ü 3
Range: ¨C3 ¡Ü y ¡Ü 3
Domain: ¨C5 ¡Ü x ¡Ü 5
Range: ¨C5 ¡Ü y ¡Ü 5 (my choice)
Domain: ¨C5 ¡Ü x ¡Ü 5
Range: ¨C1.67 ¡Ü y ¡Ü 1.67
Domain: ¨C1.67 ¡Ü x ¡Ü 1.67
Range: ¨C5 ¡Ü y ¡Ü 5
3. Graph x2 ¨C y2 = 16. What are its lines of symmetry?
It has four lines of symmetry, the x-axis, the y-axis, y = x, and y = ¨Cx.
Every line through the center is a line of symmetry.
It has four lines of symmetry, the x-axis, the y-axis, y = x, and y = ¨Cx.
It has two lines of symmetry, the x-axis and the y-axis. ( my choice)
4. Identify the center and intercepts of the conic section. Then find the domain and range.
The center of the ellipse is (0, 0).
The x-intercepts are (0, 5) and (0, ¨C5).
The y-intercepts are (¨C3, 0) and (3, 0).
The domain is {x | ¨C3 ¡Ü x ¡Ü 3}.
The range is {y { ¨C5 ¡Ü y ¡Ü 5}.
The center of the ellipse is (0, 0).
The x-intercepts are (¨C3, 0) and (3, 0).
The y-intercepts are (0, 5) and (0, ¨C5).
The domain is {x | ¨C3 ¡Ü x ¡Ü 3}.
The range is {y { ¨C5 ¡Ü y ¡Ü 5}.( my choice)
The center of the ellipse is (0, 0).
The x-intercepts are (0, 5) and (0, ¨C5).
The y-intercepts are (¨C3, 0) and (3, 0).
The domain is {y { ¨C5 ¡Ü y ¡Ü 5}.
The range is {x | ¨C3 ¡Ü x ¡Ü 3}.
The center of the ellipse is (0, 0).
The x-intercepts are (0, 5) and (0, ¨C5).
The y-intercepts are (¨C3, 0) and (3, 0).
The domain is {y { ¨C5 ¡Ü y ¡Ü 5}.
The range is {x | ¨C3 ¡Ü x ¡Ü 3}.
5. Identify the center and intercepts of the conic section. Then find the domain and range.
The center of the hyberbola is (0, 0).
The y-intercepts are (0, 5) and (0, ¨C5).
The domain is all real numbers.
The range is {y | y ¡Ý ¨C5 or y ¡Ü 5}.
The center of the hyberbola is (0, 0).
The x-intercepts are (0, 5) and (0, ¨C5).
The domain is all real numbers.
The range is {y | y ¡Ü ¨C5 or y ¡Ý 5}.
The center of the hyberbola is (0, 0).
The y-intercepts are (0, 5) and (0, ¨C5).
The domain is all real numbers.
The range is {y | y ¡Ü ¨C5 or y ¡Ý 5}.(my choice)
The center of the hyberbola is (0, 0).
The x-intercepts are (0, 5) and (0, ¨C5).
The domain is all real numbers.
The range is {x | x ¡Ü ¨C5 or x ¡Ý 5}.
54 answers
#2. Not sure what the scrambled symbols are, but
domain is -5 <= x <= 5
range is -5/3 <= y <= 5/3
#3. Since + came out ok, I assume the equation is
x^2 - y^2 = 16
As you say, x- and y-axes are the axes of symmetry
#4. If your choice is correct, the equation of the ellipse must have been
x^2/9 + y^2/25 = 1
#5. If your choice is correct, the equation of the hyperbola must have been
y^2/25 - x^2 = 1
c.
d.
b.
c.
C
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B
C
They are all wrong, the guy that posted them just replied to himself and said they are all correct.
does anyone have the answers to the circles quiz for connections academy algrba 2
a.
c.
d.
b.
c.
ARE the correct answers! I recently took this the other day and got a 5/5. Ignore the other comments trying to mislead everyone..
A
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D
B
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I just took the test. 5/21/2020
C
D
B
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Took the quick check 100% correct 12/7/2020
C
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B
C
Correct as of 6 March 2021
Exploring Conic Sections Quick Check
3/25/21
C
D
B
C
Exploring Conic Sections - Quick Check 100%
5/5/2020
2.Graph x^2 + 9y^2 = 25. What are the domain and range?
Ans: C
Domain: –5 ≤ x ≤ 5
Range: –1.67 ≤ y ≤ 1.67
3. Graph x2 – y2 = 16. What are its lines of symmetry?
Ans: D (It has two lines of symmetry, the x-axis and the y-axis).
4. Identify the center and intercepts of the conic section. Then find the domain and range.
Ans: B. The center of the ellipse is (0, 0).
The x-intercepts are (–3, 0) and (3, 0).
The y-intercepts are (0, 5) and (0, –5).
The domain is {x | –3 ≤ x ≤ 3}.
The range is {y { –5 ≤ y ≤ 5}.
5. Identify the center and intercepts of the conic section. Then find the domain and range.
Ans: C. The center of the hyperbola is (0, 0).
The y-intercepts are (0, 5) and (0, –5).
The domain is all real numbers.
The range is {y | y ≤ –5 or y ≥ 5}.
C
D
B
C
is still correct in april of 2022
1. A
2. C
3. D
4. B
5. C
6. D
7. B
8. C
9. B
10. B
11. D
12. C
13. C
14. D
on the tests/quizzes that you take INSIDE the lesson slide they can’t switch the answers, I took the unit test and these are the correct answers for it so u will 2!
C
D
B
C
still right
anyway the answers with the most likes is still right
c
d
b
c
are still correct 5/24/22
C
B
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C
Still correct as of 2/24/2023
1. A graph x^2+y=9
2.C. Graph x^2+9=25
3.D. Graph x^2-y^2=16
4.B. Find the center and intercepts of the conic section.
Becareful they switched it up