3.3
Practice A
In Exercises 1 and 2, find the vertex, and the y-intercept of the graph.
In Exercises 3-6, find (a) the axis of symmetry and (b) the vertex of the graph
of the function.
3. F(x) = 3x2 - 6x
4. y = 5x2 + 3x
5. y = -7x2 + 14x + 1
6. F(x) = -4x2 + 20x + 15