1. Activity 4.2 The Shot Put

2. Read page 421 and answer questions 1-4
A vertex of a parabola is its turning point
Where it goes from increasing to decreasing or decreasing to increasing
Answer questions 5 and 6 in your groups
To find the vertex of a general quadratic given by
we use the vertex formula given by

3. Let’s look at number 7 together Read example 1 and answer question 8
Check it using your graphing calculator
Definition:
The axis of symmetry is a vertical line that divides the parabola into two symmetrical parts
It is given by
What is the axis of symmetry for our function?

4. Intercepts of a parabola
We learned how to find the y-intercept in 4.1
It is the point (0, c)
Let’s find the x-intercepts for our function using our graphing calculators (questions 11 and 12)
With the time remaining answer questions 12, 14, and 15