2. Use h = 1, k = 2, and any value of a.

3. Subtracting from x moves a graph to the right, and adding to the expression moves the graph upward.

31. The vertex is the point (h, k), and the axis of symmetry is the line xh.

35. Identify the vertex and the direction of the parabola.

37. How is this different from #36?

42. Identify the vertex, and sketch the parabola downward from there since the leading coefficient is negative.