For Exercises 43–56, write the standard form of an equation of an ellipse subject to the given conditions. (See Example 5) Vertices: ( 6 , 0 ) and ( − 6 , 0 ) ; Foci: ( 5 , 0 ) and ( − 5 , 0 )
For Exercises 43–56, write the standard form of an equation of an ellipse subject to the given conditions. (See Example 5) Vertices: ( 6 , 0 ) and ( − 6 , 0 ) ; Foci: ( 5 , 0 ) and ( − 5 , 0 )
Solution Summary: The author calculates the equation of ellipse in standard form whose vertices are (6,0)and
For Exercises 67–70, identify the equation as representing an ellipse or a hyperbola, and match the equation with the graph.
(x – 5)²
67.
(y + 2)²
= 1
(x – 5)?
68.
(y + 2)?
= 1
49
36
36
49
(x - 5)?
69.
(y + 2)²
= 1
(y + 2)²
= 1
(x - 5)?
49
36
70.
49
36
А.
В.
С.
D.
15
12
41
6
-6-4-2
4 6 8 10 12 14
4 6 8 10 12 14
-6 -4
2.
4 6 8 10l 12 14
-6
1k 15 18 21
-6
For Exercises 27–34, an equation of a parabola x = 4py or y = 4px is given.
a. Identify the vertex, value of p, focus, and focal diameter of the parabola.
b. Identify the endpoints of the latus rectum.
c. Graph the parabola.
d. Write equations for the directrix and axis of symmetry. (See Examples 2-3)
27. x
-4y
28. x
-20y
29. 10y
= 80x
30. 3y = 12x
31. 4x
40y
32. 2x
14y
33. y =
34. y = -2x
= -X
%3D
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