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Find the Vertex, Focus, Directrix, and Focal Width of the Parabola

Question 161

Multiple Choice

Find the vertex, focus, directrix, and focal width of the parabola.
- y2=32x\mathrm { y } ^ { 2 } = 32 \mathrm { x }


A) Vertex: (0,0) ( 0,0 ) ; Focus: (8,0) ( 8,0 ) ; Directrix: x=8x = - 8 ; Focal width: 128
B) Vertex: (0,0) ( 0,0 ) ; Focus: (0,8) ( 0,8 ) ; Directrix: y=8y = - 8 ; Focal width: 8
C) Vertex: (0,0) ( 0,0 ) ; Focus: (8,0) ( 8,0 ) ; Directrix: x=8x = - 8 ; Focal width: 32
D) Vertex: (0,0) ( 0,0 ) ; Focus: (8,8) ( 8,8 ) ; Directrix: x=8x = 8 ; Focal width: 128

Correct Answer:

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