document.write( "Question 451433: last one i need help with. 50 problems due in one day knew 45
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Algebra.Com's Answer #310542 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi, Assuming the vertices are (0,-4)and (0,4)
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document.write( "Note: Standard Form of an Equation of an Hyperbola opening up and down is:
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document.write( "where Pt(h,k) is a center  with vertices 'b' units up and down from center.
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document.write( "Hyperbola with vertices are (0,-4)and (0,4)and foci at (0,7) and (0,-7)
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document.write( "  C(0,0) with vertices V(0,-4) and V(0,4)
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document.write( "foci (0,-7) and(0,7)  c = sqrt(16 + a^2)= 7   a^2 = 33
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