SOLUTION: Not sure how to figure this out.In the equation f(x)=a (x-h)^2 +k, if a > 0, h< 0, and k <, Which of the following statements must be true? (a) The parabola opens upward and has a

Question 890407: Not sure how to figure this out.In the equation f(x)=a (x-h)^2 +k, if a > 0, h< 0, and k <, Which of the following statements must be true?
(a) The parabola opens upward and has a vertex in the 3rd quadrant.
(b) The parabola opens upward and has a vertex in the 4th quadrant.
� The parabola opens downward and has vertex in the 3rd quadrant.
(d) The parabola opens downward and has a vertex in the 4th quadrant.
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Since , the parabola opens upwards.
and are both less than zero so the vertex is in the 3rd quadrant.

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