5.1 modeling data with quadratic functions quadratic function: a function that can be written in the...
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5.1 Modeling Data with Quadratic Functions
Quadratic function: a function that can be written in the standard form of
f(x) = ax2 + bx + cwhere
a does not equal 0
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cbxaxxf 2)(
Quadratic term Linear term Constant term
quadratic. considered is 2 of degree
aith function wany 0,a Since
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Classifying Functions
ex: (2x + 3) (x – 4) ex: 4(x2 + 5) – 2(2x2- 9x)
Determine if the function is linear or quadratic. Identify the quadratic, linear and constant terms.
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Parabolas:The graph!!!!
Axis of Symmetry
• The line that divides a parabola into 2 parts that are mirror images.
Vertex
• The point at which the parabola intersects the axis of symmetry.
• Is also known as the maximum or the minimum point on the graph.
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Examples of parabolas
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Ex: Label the axis of symmetry and the vertex. State if the vertex is a max or a min.
x
y
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Ex: Label the axis of symmetry and the vertex. State if the vertex is a max or a min.
x
y
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Homework
10/25: #30 pg 241 1-15