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chapter7.6r
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1995-04-09
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àï7.6èReview
äïPlease answer the following questions about conic
êêsections.
â
êêëNot available in the Review Section.
éS
êêëNot available in the Review Section.
1ê Find the x-intercepts of the parabola,
#êêêëyï=ïxì - 4x + 3.
êë A)ï(0, 3), (0, 1)êëB)ï(2, 0), (0, 3)
êë C)ï(1, 0), (3, 0)êëD)ïå
ü
êêëNot available in the Review Section.
Ç C
2ê Find the y-intercept of the parabola,
#êêêëyï=ïxì - 4x + 3.
êë A)ï(0, -4)êêëB)ï(0, 3)
êë C)ï(4, 0)êêë D)ïå
ü
êêëNot available in the Review Section.
Ç B
3ê Find the axis of symmetry of the parabola,
#êêêëyï=ïxì - 4x + 3.
êë A)ïx = 2êêêB)ïx = -3
êë C)ïx = -1êêë D)ïå
ü
êêëNot available in the Review Section.
Ç A
4êèFind the vertex of the parabola,
#êêêëyï=ïxì - 4x + 3.
êë A)ï(2, -1)êêëB)ï(3, -2)
êë C)ï(1, -3)êêëD)ïå
ü
êêëNot available in the Review Section.
Ç A
#F 5êGraph the parabola, yï=ïxì - 4x + 3.
A) 1, 4, 3
B) 1, -4, 3
C) -1, 4, -3
D) -1, -4, -3
ü
êêëNot available in the Review Section.
Ç B
6êèFind the distance between the points,
êêêë(-4, 3) and (1, 7).
#êêêêêêê┌──
#êë A)ï3êêêè B)ï5∙á 2
#êêè┌───
#êë C)ïá 41êêê D)ïå
ü
êêëNot available in the Review Section.
Ç C
7è Find the equation of the circle with center, (3, 5),
êêêëand radius, 7.
#ë A)ï(x + 3)ì + (y + 5)ì = 7ë B)ï(x - 3)ì + (y - 5)ì = 49
#ë C)ï(x - 5)ì + (y - 3)ì = 7ë D)ïå
ü
êêëNot available in the Review Section.
Ç B
8ê Find the center and radius of the circle,
#êêê xì + yì - 4x - 2y - 4ï=ï0.
êëA)ï(2, 1), r = 3êêïB)ï(3, 2), r = 1
êëC)ï(-2, -1), r = 4êêD)ïå
ü
êêëNot available in the Review Section.
Ç A
9ê Find the x-intercepts of the ellipse,
#êêêê4xì + yìï=ï4.
êë A)ï(0, 2), (0, -2)êè B)ï(2, 0), (-2, 0)
êë C)ï(1, 0), (-1, 0)êè D)ïå
ü
êêëNot available in the Review Section.
Ç C
10êFind the y-intercepts of the ellipse,
#êêêê4xì + yìï=ï4.
êë A)ï(0, 2), (0, -2)êè B)ï(2, 0), (-2, 0)
êë C)ï(1, 0), (-1, 0)êè D)ïå
ü
êêëNot available in the Review Section.
Ç A
# 11êïGraph the ellipse, 4xì + yìï=ï4.
@fig7604.bmp,28,225
@fig7605.bmp,242,225
@fig7606.bmp,450,225
ü
êêëNot available in the Review Section.
Ç B
12êFind the intercepts of the hyperbola,
#êêêêxì - yì/4ï=ï1.
êë A)ï(2, 0), (-2, 0)êè B)ï(1, 0), (-1, 0)
êë C)ï(0, 2), (0, -2)êè D)ïå
ü
êêëNot available in the Review Section.
Ç B
13èFind the equations of the asymptotes of the hyperbola,
#êêêêxì - yì/4ï=ï1.
êë A)ïy = ± xêêëB)ïy = ± (1/2)x
êë C)ïy = ± 2xêêè D)ïå
ü
êêëNot available in the Review Section.
Ç C
14èFind the corners of the fundamental rectangle for the
#êêê hyperbola,ïxì - yì/4ï=ï1.
êë A)ï(1, ±4), (-1, ±4)êïB)ï(2, ±1), (-2, ±1)
êë C)ï(1, ± 2), (-1, ± 2)êD)ïå
ü
êêëNot available in the Review Section.
Ç C
# 15êGraph the hyperbola, xì - yì/4ï=ï1.
@fig7601.bmp,28,225
@fig7602.bmp,242,225
@fig7603.bmp,450,225
ü
êêëNot available in the Review Section.
Ç A
# 16èIdentify the conic, 3xì - yì + 2x - 3y - 15ï=ï0.
êë A)ïParabolaêêè B)ïCircle
êë C)ïEllipseêêëD)ïHyperbola
ü
êêëNot available in the Review Section.
Ç D
17ïGive the eccentricity, directrix, and name of the conic,
êêêër = 5/(6 + 2∙cos Θ)
êêêA)ïε = 1,ïx = 1/3,ïparabola
êêêB)ïε = 3,ïx = 2/5,ïhyperbola
êêêC)ïε = 1/3,ïx = 5/2,ïellipse
êêêD)ïå of ç
ü
êêëNot available in the Review Section.
Ç C
18ïGive the eccentricity, directrix, and name of the conic,
êêêër = 9/(5 - 7∙cos Θ)
êêêA)ïε = 1,ïx = -7,ïparabola
êêêB)ïε = 7/5,ïx = -9/7,ïhyperbola
êêêC)ïε = 5/7,ïx = -9/7,ïellipse
êêêD)ïå of ç
ü
êêëNot available in the Review Section.
Ç B
19ïGive the eccentricity, directrix, and name of the conic,
êêêër = 2/(3 - 3∙sin Θ)
êêêA)ïε = 1,ïx = -2/3,ïparabola
êêêB)ïε = 3/2,ïx = -2,ïhyperbola
êêêC)ïε = 2/3,ïx = -3,ïellipse
êêêD)ïå of ç
ü
êêëNot available in the Review Section.
Ç A