1. Graphing General Quadratics y = ax2 + bx + c
Objective: the Students will graph general quadratic functions to find

2. Axis of Symmetry x= -b/2a
Graph the function. Label the vertex and the axis of symmetry.
Y = x2 + 6x + 2
Y = -3x2 – 2x – 5
Y = 1/3x2 + 6x – 9

3. Find the axis of symmetry and vertex without graphing
y = 2x2 – 8x + 6
y = 1/2x2 + 8x – 9
y = -x2 – 10x

4. Tell Whether the function has a minimum value or a maximum value
Tell Whether the function has a minimum value or a maximum value. Then find the value.
F(x) = x2 – 6
F(x) = -3x2 + 12x – 20
F(x) = 1/2x2 – 2x + 5

5. Fishing spiders can propel themselves across water and leap vertically from the surface of the water. During a vertical jump, the height of the body of the spider can be modeled by the function y = -4500x x + 43, where x is the duration (in seconds) of the jump and y is the height (in millimeters) of the spider above the surface of the water.
After how many seconds does the spider’s body reach its maximum height?
What is the maximum height?

6. The parabolic arches that support the roof of the Dallas Convention Center can be modeled by the graph of the equation y = x x where x and y are measured in feet. What is the height h at the highest point of the arch?