document.write( "Question 422433: Choose the equation that best represents a hyperbola with vertices (0, –1) and (4, –1), and foci (–1, –1) and (5, –1).\r
\n" ); document.write( "\n" ); document.write( "(a) (x-2)^2/4 - (y+1)^2/5 = 1
\n" ); document.write( "(b) (x-2)^2/25 - (y+1)^2/16 =1
\n" ); document.write( "(c) (x+2)^2/4 + (y+1)^2/5 = 1
\n" ); document.write( "(d) x^2/4 - y^2/5 = 1 \n" ); document.write( "

Algebra.Com's Answer #294872 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi
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document.write( "hyperbola with vertices (0, –1) and (4, –1), and foci (–1, –1) and (5, –1).
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document.write( "Note: Line of symmetry is y = -1, Hyperbola opens right and left
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document.write( "Standard Form of an Equation of an Hyperbola is   
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document.write( "where Pt(h,k) is a center  with vertices 'a' units right and left of center.
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document.write( " vertices (0,-1) and (4,-1) tell us the Center is (2,-1)
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document.write( "thus:  
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document.write( "foci are 3 units from center: \"sqrt(4+5)\" = 3,  b =5
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document.write( "Always recommend sketching it out:
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