document.write( "Question 888175: concept check for f(x) = a(x-h)^2+k, in what quadrant is the vertex if (a) h>0, k>0; (b) h>0, k<0; (c) h<0, k>0; (d) h<0,k<0? \n" ); document.write( "

Algebra.Com's Answer #537165 by josgarithmetic(39617) $\"\"$ $\"About$

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The vertex is the point, (h,k). The minus operation in the standard form equation is part of the equation's format. Now, knowing the sign for h and k will tell you what you need to know for which quadrant is the vertex in. You already know THIS:\r
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