SOLUTION: 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?

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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?
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
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:

____x___y
Q1, pos pos
Q2, neg pos
Q3, neg neg
Q4, pos neg