Definitions of the Day (DODs) 7.3 - GRAPING QUADRATIC FUNCTIONS OF THE FORM ax 2 +bx+c Axis of Symmetry (review) Vertex (review)

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Presentation transcript:

Definitions of the Day (DODs) GRAPING QUADRATIC FUNCTIONS OF THE FORM ax 2 +bx+c Axis of Symmetry (review) Vertex (review)

In every quadratic we have looked at so far, b=0. When b  0, the parabola shifts right or left. The axis of symmetry is no longer the y-axis. Remember, Quadratic F UNCTION Form of a vertical line! To find the y-coordinate of the vertex, we will plug in the x value back into the equation.

Find the Axis of Symmetry and the coordinates of the Vertex for the following Quadratic Functions. a) b)

Finding a suitable domain for a quadratic equation. Vertex 3 domain values above the vertex 3 domain values below the vertex Then we fill out our table of values like we have in the past.

Find a suitable domain for the given quadratic function. List the vertex and axis of symmetry. Then graph the quadratic function.

Find a suitable domain for the given quadratic function. List the vertex and axis of symmetry. Then graph the quadratic function.

Find a suitable domain for the given quadratic function. List the vertex and axis of symmetry. Then graph the quadratic function. Your Turn!!

Sentence Frames 1.I find the y-coordinate of the vertex by … __________ ____________________________________________ 2.I find a reasonable domain for the quadratic by … ___________________________________________ ___________________________________________ 3. The variable b in a quadratic equation moves a parabola ___________ and ___________.