1. The vertex on your graph will be (H,K)
2. a tells you wether the V is opened up or down
If its negative its opened down, if its positive its opened up
3. the h moves the V to the right or to the left
If the h is positive it moves to the left, if its negative it moves to the right
4. k moves the V up or down
This is how it looks like
If y is greater you shade above, when its less you have to shade below and use a dotted line!
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