EOCT Practice Question of the Day CCGPS Geometry Day 24 (9-5-14) UNIT QUESTION: How are real life scenarios represented by quadratic functions? Today’s.

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Presentation transcript:

EOCT Practice Question of the Day

CCGPS Geometry Day 24 (9-5-14) UNIT QUESTION: How are real life scenarios represented by quadratic functions? Today’s Question: How do we graph quadratics in standard form? Standard: MCC9-12.F.IF.8

Coefficients a, b, and c are coefficients Examples: Find a, b, and c

Open Up / Open Down

A > 0 Therefore, the parabola opens up Example #1

A < 0 Therefore, the parabola opens down Example #2

Examples: Determine if the Parabola Opens Up or Opens Down

Axis of Symmetry Vertex Point 1.Axis of symmetry is found using 2. To find the y coordinate of the vertex point, substitute x into the equation and solve for y.

Examples Find the vertex point

x-(x) 2 +2x-1 y(x, y) 

Tell whether the graph opens up or down. Graph each using a T-chart. Find the axis of symmetry &  vertex . Use a dotted line to graph the axis of symmetry. xx 2 - 6x + 5 y(x, y) 

x-(x) 2 - 2x+3 y(x, y) 

x(x) 2 +2x-6 y(x, y) 

x(x) 2 +8x+13 y(x, y) 

x(x) 2 +8x+13 y(x, y) 

Homework Practice Worksheet