Exam 8: Analytic Geometry in Two and Three Dimensions

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In three-dimensional space, what is the equation of the set of points that are 12 units from the point (1,5,-4) ?

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The point (-5,-4,8) is what distance from the y z -plane?

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Find the equation for the conic in standard form. Identify the conic. x=5+2cos⁡t,y=−2+sin⁡t,0≤t≤2πx=5+2 \cos t, y=-2+\sin t, 0 \leq t \leq 2 \pi

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What is the equation of the parabola with vertex (-4,-4) that passes through (0,0) and has its axis of symmetry parallel to the x -axis?

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For the hyperbola (x+2)24−(y−5)216=1\frac{(x+2)^{2}}{4}-\frac{(y-5)^{2}}{16}=1 find the center, foci, endpoints of the transverse axis, and the equations of the asymptotes.

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In three-dimensional space, what are the parametric equations for the line through the points (4,-2,3) and (-1,1,0) ?

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Identify the type of conic given by the equation 2x2−xy+3y2−x−4y−6=02 x^{2}-x y+3 y^{2}-x-4 y-6=0

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Find an equation in standard form for the hyperbola centered at (1,-4) , with one focus at (7,-4) and eccentricity e=2 .

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Use the discriminant B2−4ACB^{2}-4 A C to determine if 3x2−12xy+4y2+x−5y−4=03 x^{2}-12 x y+4 y^{2}+x-5 y-4=0 is an ellipse, a parabola, or a hyperbola.

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What is the magnitude of the vector v=⟨2,−1,3⟩?\mathbf{v}=\langle 2,-1,3\rangle ?

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Which of the following are the vertices of the hyperbola (x−3)225−(y+5)2169=1?\frac{(x-3)^{2}}{25}-\frac{(y+5)^{2}}{169}=1 ?

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 Sketch the graph of the hyperbola .\text { Sketch the graph of the hyperbola } . (y−5)29−(x−3)225=1\frac{(y-5)^{2}}{9}-\frac{(x-3)^{2}}{25}=1 \text { Sketch the graph of the hyperbola  }  .   \frac{(y-5)^{2}}{9}-\frac{(x-3)^{2}}{25}=1

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In a whispering gallery, any sound at one focus of an ellipse reflects off the ellipse directly to the other focus. The figure shows an elliptical whispering gallery, where x is the center of the ellipse. What is the distance that sound travels from focus F1F_{1} to focus F2?F_{2} ?  In a whispering gallery, any sound at one focus of an ellipse reflects off the ellipse directly to the other focus. The figure shows an elliptical whispering gallery, where  x  is the center of the ellipse. What is the distance that sound travels from focus  F_{1}  to focus  F_{2} ?

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Find an equation in standard form for the ellipse whose major axis endpoints are (-5,2) and (3,2) and whose minor axis has length 6 .

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Write the equation of the conic with focus (2,-3) and directrix y=5 .

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Sketch the graph of the hyperbola (x+2)24−(y−5)216=1\frac{(x+2)^{2}}{4}-\frac{(y-5)^{2}}{16}=1 .  Sketch the graph of the hyperbola  \frac{(x+2)^{2}}{4}-\frac{(y-5)^{2}}{16}=1 .

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Find the equation for the conic in standard form. Identify the conic. x=2+2cos⁡t,y=−2+2sin⁡t,0≤t≤2πx=2+2 \cos t, y=-2+2 \sin t, 0 \leq t \leq 2 \pi

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Determine the directrix of the conic with polar form r=6/(3−cos⁡θ)r=6 /(3-\cos \theta)

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Sketch a graph of the equation x29+y216=1\frac{x^{2}}{9}+\frac{y^{2}}{16}=1

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For the equation 2x2−xy−3y2−2x+4y−6=02 x^{2}-x y-3 y^{2}-2 x+4 y-6=0 , solve for y to obtain equation(s) that could be entered into your grapher.

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