1. 5-3 Transforming Parabolas (Part 2)
Big Idea:
--Demonstrate and explain what changing a coefficient has on the graph of quadratic functions.

2. Vertex and y-intercept of Parabolas
y-axis
y-intercept
(0, 5)
Vertex
(1, 2)
x-axis

3. Ex 1: Identify the vertex and the y-intercept of the graph of each function.
A) y = 2.4(x + 10)² B) y =(x – 200)² + 1

4. C) y = 0.5(x + 5)² - 120

5. Vertex Form: y = a(x – h)² + k Standard Form: y = ax2 + bx +c
1. Find the h-value of the vertex by using x =
2. Plug your x-value (h) into quadratic function (original) and find k-value. (vertex (h, k))
3. Find your a-value from y = ax² + bx + c
4. Substitute a, h, and k into vertex form.

6. Ex 2: Write each function in vertex form.
A) y = 2x² + 10x + 7

7. B) y = -3x² + 12x +5

8. C) y = -3x² + 12x -1

9. Essential Question: How does the second point of graph effect the parabola? Hint: (vertical stretch, vertical shrink, reflection)