For Part 2, what do you think the value of h represents in the graph? How can you predict the graph of a quadratic function knowing the value of h in the vertex form y = a(x - h) + k ? For Part 3. a) In the vertex form y = a(x - h) + k, what do you think the value of a represents in the graph? b) What happens when the value of a increases? c) What happens when 0 1? For Part 4. a) What happens when the value of a is negative