Practice Test A

  1. Find the standard form of the parabola with focus (0, 12) and directrix with equation x=12.

  2. Convert the equation y22y+8x+25=0 to the standard form for a parabola by completing the square.

  3. Find the focus and directrix of the parabola with equation x2=9y.

  4. Graph the parabola with equation y2=5x.

  5. Find the vertex, focus, and directrix of the parabola with equation (x+2)2=8(y1).

  6. The base of a water slide is parabolic in shape and is 6 feet wide and 2 feet deep. Find the height of the slide 1 foot from its center.

  7. Find an equation of the parabola with vertex (3, 1) and directrix x=3.

In Problems 8–10, find the standard form of the equation of the ellipse satisfying the given conditions.

  1. Foci: (0, 2), (0, 2) vertices: (0, 4), (0, 4)

  2. Foci: (2, 0)(2, 0); y-intercepts: 5, 5

  3. Major axis horizontal with length 18; minor axis of length 4; center (0, 0)

  4. Graph the ellipse with equation 9x2+y2=9.

  5. Find the vertices and foci for the hyperbola with equation 49y2x2=49.

  6. Graph the hyperbola with equation x249y24=1.

  7. Find the standard form of the equation of the hyperbola with foci (0, 45), (0,45) and vertices (0, 6), (0, 6).

In Problems 15 and 16, convert the equation to the standard form for a hyperbola by completing the squares on x and y.

  1. y2  x2+2x=2

  2. x22x4y216y=19

In Problems 17–20, identify the conic section and sketch its graph.

  1. x29y2=16

  2. x2x+4y+14=0

  3. x2+y2+2x6y=3

  4. 25x2+4y2=100

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