Exam 9: Analytic Geometry

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Find the center, transverse axis, vertices, foci, and asymptotes of the hyperbola. - x236−y24=1\frac { x ^ { 2 } } { 36 } - \frac { y ^ { 2 } } { 4 } = 1

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D

Match the equation to the graph. - Match the equation to the graph. -  A)  x ^ { 2 } = 4 y  B)  x ^ { 2 } = - 4 y  C)  y ^ { 2 } = 4 x  D)  y ^ { 2 } = - 4 x A) x2=4yx ^ { 2 } = 4 y B) x2=−4yx ^ { 2 } = - 4 y C) y2=4xy ^ { 2 } = 4 x D) y2=−4xy ^ { 2 } = - 4 x

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C

Find an equation for the hyperbola described. -Vertices at (±2,0)( \pm 2,0 ) ; foci at (±11,0)( \pm 11,0 )

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B

Rotate the axes so that the new equation contains no xy-term. Discuss the new equati - x2+2xy+y2−8x+8y=0x^{2}+2 x y+y^{2}-8 x+8 y=0

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Match the equation to its graph. - y2=−10xy ^ { 2 } = - 10 x

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Find an equation for the parabola described. -Vertex at (7, -9); focus at (3, -9) A) (x+8)2=−4(y−4)( x + 8 ) ^ { 2 } = - 4 ( y - 4 ) B) (x+8)2=4(y−4)( x + 8 ) ^ { 2 } = 4 ( y - 4 ) C) (y+4)2=−12(x−8)( y + 4 ) ^ { 2 } = - 12 ( x - 8 ) D) (y+9)2=16(x−7)( y + 9 ) ^ { 2 } = 16 ( x - 7 )

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Write an equation for the graph. -Write an equation for the graph. -

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Match the equation to its graph. - x2=7yx ^ { 2 } = 7 y

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Find a rectangular equation for the plane curve defined by the parametric equations. -A baseball pitcher throws a baseball with an initial speed of 140 feet per second at an angle of 20° to the horizontal. The ball leaves the pitcher's hand at a height of 5 feet. Find parametric equations that describe the motion of the ball as a function of time. How long is the ball in the air? When is the ball at its maximum height? What is the maximum height of the ball? A) x=124.04tx = 124.04 t and y=−16t2+45.14t+5y = - 16 t ^ { 2 } + 45.14 t + 5 5.856sec,1.411sec5.856 \mathrm { sec } , 1.411 \mathrm { sec } , 31.83831.838 feet B) x=124.04tx = 124.04 t and y=−16t2+45.14t+5y = - 16 t ^ { 2 } + 45.14 t + 5 5.412sec,1.411sec5.412 \mathrm { sec } , 1.411 \mathrm { sec } , 259.702259.702 feet C) x=124.04tx = 124.04 t and y=−16t2+45.14t+5y = - 16 t ^ { 2 } + 45.14 t + 5 2.706sec,1.411sec2.706 \mathrm { sec } , 1.411 \mathrm { sec } , 4.994.99 feet D) x=131.56tx = 131.56 \mathrm { t } and y=−16t2+47.88t+5\mathrm { y } = - 16 \mathrm { t } ^ { 2 } + 47.88 \mathrm { t } + 5 3.094sec,1.496sec3.094 \mathrm { sec } , 1.496 \mathrm { sec } , 40.8240.82 feet

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Graph the hyperbola. - (x−2)2−4(y−2)2=4(x-2)^{2}-4(y-2)^{2}=4  Graph the hyperbola. - (x-2)^{2}-4(y-2)^{2}=4

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Graph the hyperbola. - (x−2)24−(y−2)216=1\frac{(x-2)^{2}}{4}-\frac{(y-2)^{2}}{16}=1  Graph the hyperbola. - \frac{(x-2)^{2}}{4}-\frac{(y-2)^{2}}{16}=1

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Identify the conic that the polar equation represents. Also, give the position of the directrix. - r=63−4cos⁡θr = \frac { 6 } { 3 - 4 \cos \theta }

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Graph the hyperbola. -The roof of a building is in the shape of the hyperbola y2−x2=33y ^ { 2 } - x ^ { 2 } = 33 , where xx and yy are in meters. Refer to the figure and determine the height hh of the outside walls.  Graph the hyperbola. -The roof of a building is in the shape of the hyperbola  y ^ { 2 } - x ^ { 2 } = 33 , where  x  and  y  are in meters. Refer to the figure and determine the height  h  of the outside walls.     a = b = 7 m a=b=7ma = b = 7 m

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Graph the curve whose parametric equations are given. - x=2t2x=2 t^{2} , y=t+2y=t+2 : −∞<t<∞- \infty < t < \infty  Graph the curve whose parametric equations are given. - x=2 t^{2}  ,  y=t+2  :  - \infty < t < \infty         A)    B)    C)    D)    A)  Graph the curve whose parametric equations are given. - x=2 t^{2}  ,  y=t+2  :  - \infty < t < \infty         A)    B)    C)    D)    B)  Graph the curve whose parametric equations are given. - x=2 t^{2}  ,  y=t+2  :  - \infty < t < \infty         A)    B)    C)    D)    C)  Graph the curve whose parametric equations are given. - x=2 t^{2}  ,  y=t+2  :  - \infty < t < \infty         A)    B)    C)    D)    D)  Graph the curve whose parametric equations are given. - x=2 t^{2}  ,  y=t+2  :  - \infty < t < \infty         A)    B)    C)    D)

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Find the center, foci, and vertices of the ellipse. - 4x2+64y2=2564 x ^ { 2 } + 64 y ^ { 2 } = 256

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Find an equation for the ellipse described. -Center at (0,0)( 0,0 ) ; focus at (−5,0);( - 5,0 ) ; vertex at (8,0)( 8,0 )

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Match the equation to its graph. - x2=−12yx ^ { 2 } = - 12 y

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Discuss the equation and graph it. - r=63−3cos⁡θr=\frac{6}{3-3 \cos \theta}  Discuss the equation and graph it. - r=\frac{6}{3-3 \cos \theta}

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Graph the hyperbola. - x24−y236=1\frac{x^{2}}{4}-\frac{y^{2}}{36}=1  Graph the hyperbola. - \frac{x^{2}}{4}-\frac{y^{2}}{36}=1

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Identify the conic that the polar equation represents. Also, give the position of the directrix. - r=21−2cos⁡θr = \frac { 2 } { 1 - 2 \cos \theta }

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