Practice Test B

  1. Find the standard form of the equation of the parabola with focus (10, 0) and directrix x=10.

    1. y2=10x

    2. y2=40x

    3. x2=40y

    4. y2=40x

  2. Convert the equation y24y5x+24=0 to the standard form for a parabola by completing the square.

    1. (y+2)2=5(x4)

    2. (y2)2=5(x4)

    3. (y+2)2=5(x4)

    4. (y2)2=5(x+4)

  3. Find the focus and directrix of the parabola with equation x=7y2.

    1. focus: (128, 0); directrix: x=128

    2. focus: (0,128); directrix: y=128

    3. focus: (128, 0); directrix: x=128

    4. focus: (17, 0) directrix: x=17

  4. Graph the parabola with equation y2=7x.

  5. Find the vertex, focus, and directrix of the parabola with equation (x3)2=12(y1).

    1. vertex: (3, 1); focus: ...

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