14. Use Structure Write the equation of the hyperbola that has its center at the origin, vertices on the y-axis 8 units apart, and asymptotes y=x. Then graph the hyperbola.

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter7: Conic Sections
Section7.3: Hyperbolas
Problem 3E: The graph of the equation x2a2+y2b2=1 with a > 0, b > 0 is a hyperbola with ____...
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my
PRACTICE & PROBLEM SOLVING
UNDERSTAND
13. Look for Relationships Jordan wants to graph
the equation 25x²-9y² 225.
a. What kind of conic section could the
equation represent? Explain.
b. Explain how to write the equation in
standard form. Then write the equation in
standard form.
c. What are the vertices?
d. What are the asymptotes?
e. What are the foci?
f. Is the transverse axis horizontal or vertical?
Explain.
g. Graph the equation.
14. Use Structure Write the equation of the
hyperbola that has its center at the origin,
vertices on the y-axis 8 units apart, and
asymptotes y=x. Then graph the
hyperbola.
15. Error Analysis Describe and correct the error
Elaine made in determining the vertices,
asymptotes, and foci of a hyperbola.
hyperbola:
y² x²
144256 1
vertices: (-12, 0) and (12, 0)
asymptotes: y=x
foci: (0, -400) and
(0, 400)
X
16. Higher Order Thinking The square of the
distance from the center of a hyperbola to a
focus is 78. The intersections of the hyperbola
with the transverse axis are (-/20, 0) and
(√20, 0). Write the equation of the hyperbola.
17. Construct Arguments Determine whether the
equation
x²2²²2²
5-2 represents a hyperbola.
18 32
Explain.
Scar
Multimedia
PRACTICE
Write an equation for the hyperbola. Sex EXAMPLE 1
18. foci at (5,0) and (-5, 0) and a constant
difference of 8
19. foci at (0, 15) and (0, -15) and a constant
difference of 18
Graph the hyperbola. SEE EXAMPLE 2
20.--1
21.--1
22. %6-8-1
1
Write an equation for the hyperbola with the
given information. SEE EXAMPLE 3
24. vertices (0, -6) and (0, 6) and asymptotes
y=zx
25. vertices (-9, 0) and (9, 0) and asymptotes
y=+x
26. A telescope is made with a hyperbolic mirror,
shown graphed on the coordinate plane.
To assemble the telescope correctly, the
manufacturer needs to know the distance to
the focus on the same side as the reflective
side of the mirror. What is this distance?
What equation represents the location of the
mirror? SEE EXAMPLE 4
ty
8 16 24
0
(12.-30)
(0-5)
-16
Which conic section is represented by each
equation? SEE EXAMPLES
27. 16x²+25y2-64-0
28.-49x²+36y2-48-0
29. 4y² +8y-x-16-0
30.-²-2+5x-10y +15=0
Transcribed Image Text:my PRACTICE & PROBLEM SOLVING UNDERSTAND 13. Look for Relationships Jordan wants to graph the equation 25x²-9y² 225. a. What kind of conic section could the equation represent? Explain. b. Explain how to write the equation in standard form. Then write the equation in standard form. c. What are the vertices? d. What are the asymptotes? e. What are the foci? f. Is the transverse axis horizontal or vertical? Explain. g. Graph the equation. 14. Use Structure Write the equation of the hyperbola that has its center at the origin, vertices on the y-axis 8 units apart, and asymptotes y=x. Then graph the hyperbola. 15. Error Analysis Describe and correct the error Elaine made in determining the vertices, asymptotes, and foci of a hyperbola. hyperbola: y² x² 144256 1 vertices: (-12, 0) and (12, 0) asymptotes: y=x foci: (0, -400) and (0, 400) X 16. Higher Order Thinking The square of the distance from the center of a hyperbola to a focus is 78. The intersections of the hyperbola with the transverse axis are (-/20, 0) and (√20, 0). Write the equation of the hyperbola. 17. Construct Arguments Determine whether the equation x²2²²2² 5-2 represents a hyperbola. 18 32 Explain. Scar Multimedia PRACTICE Write an equation for the hyperbola. Sex EXAMPLE 1 18. foci at (5,0) and (-5, 0) and a constant difference of 8 19. foci at (0, 15) and (0, -15) and a constant difference of 18 Graph the hyperbola. SEE EXAMPLE 2 20.--1 21.--1 22. %6-8-1 1 Write an equation for the hyperbola with the given information. SEE EXAMPLE 3 24. vertices (0, -6) and (0, 6) and asymptotes y=zx 25. vertices (-9, 0) and (9, 0) and asymptotes y=+x 26. A telescope is made with a hyperbolic mirror, shown graphed on the coordinate plane. To assemble the telescope correctly, the manufacturer needs to know the distance to the focus on the same side as the reflective side of the mirror. What is this distance? What equation represents the location of the mirror? SEE EXAMPLE 4 ty 8 16 24 0 (12.-30) (0-5) -16 Which conic section is represented by each equation? SEE EXAMPLES 27. 16x²+25y2-64-0 28.-49x²+36y2-48-0 29. 4y² +8y-x-16-0 30.-²-2+5x-10y +15=0
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