document.write( "Question 469343: How do you find the vertex if the focus is (-4,4); directrix the line y= 2. I am completed lost. \n" ); document.write( "

Algebra.Com's Answer #322013 by scott8148(6628) $\"\"$ $\"About$

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the vertex and the focus both lie on the axis of symmetry, which is perpendicular to the directrix\r
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\n" ); document.write( "\n" ); document.write( "so in this case, the axis of symmetry is ___ x = -4 (the x-coordinate of the focus)\r
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\n" ); document.write( "\n" ); document.write( "the vertex lies midway between the focus and the directrix ___ in this case, midway between 2 and 4 in the y-direction\r
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\n" ); document.write( "\n" ); document.write( "so the vertex is located at ___ (-4,3) \n" ); document.write( "

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