5-3 Transforming Parabolas Day 1 - Poudre School District
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53 Transforming Parabolas Day 1 1 November 19, 2008 Nov 157:33 PM Objectives: Use the vertex form of a quadratic function to: graph quadratic functions and write the equations of quadratic functions from graphs. 5.3 Parabolas Day 1 ing
5-3 Transforming Parabolas Day 1 - Poudre School District
5-3 Transforming Parabolas Day 11
Objectives:
Use the vertex form of a quadratic function to:
graph quadratic functions and
write the equations of quadratic functions from graphs.
5.3 Parabolas Day 1ing
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Jun 2 8:52 AM
* equation in vertex form f(x) = a(x h)2 + k
* the graph looks like a "U"
* a impacts the size
Quadratic Functions
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Jun 2 8:52 AM
* equation in vertex form f(x) = a(x h)2 + k
* the graph looks like a "U"
* a impacts the size
* a>1 makes the graph more narrow
* 0<a<1 makes the graph wider
* a<0 flips upsidedown
Quadratic Functions
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Jun 2 8:52 AM
Quadratic Functions
* equation in vertex form f(x) = a(x h)2 + k
* the graph looks like a "U"
* a impacts the size
* a>1 makes the graph more narrow
* 0<a<1 makes the graph wider
* a<0 flips upsidedown
* h is the horizontal movement
* k is the vertical movement
53 Transforming Parabolas Day 1
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Jun 2 10:27 AM
What do changes in "a", "h" & "k" look like when you graph a
quadratic function?
Open attachments &
play slider!!
* equation in vertex form f(x) = a(x - h)2 + k Quadratic
Functions
53 Transforming Parabolas Day 1
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Nov 1510:02 PM
How do you find points on the graph with different values of a?
Graph the Quadratic Parent Function: y = x2
Rewritten: y = 1(x 0)2 + 0
Vertex: (0, 0)
Axis of Symmetry: x = 0
Table of values to graph: x y
Graph: y = 2x2 (on the same graph)
What changes are caused by a = 2?
53 Transforming Parabolas Day 1
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53 Transforming Parabolas Day 1
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Graph each quadratic function & find the domain and
range:
1. f(x) = (x + 4)2 - 2 2. f(x) = (x - 2)2 - 3 3. f(x) = - (x - 1)2
+ 2
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2
- 2
- 2
- 4
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1. f(x) = -(x + 3)2 + 1 2. f(x) = 4(x + 2)2 - 3 3. f(x)= - 1/2(x -
1)2 + 4
Graph each quadratic function & find the domain and
range:
D: R:
D: R:
D: R:
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Homework: page 255 (2 - 10, 13 - 20, 24 - 26, 43 - 45, 76,
77)
Attachments