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The Vertex and Axis of Symmetry  Problem 6
Alissa Fong
Alissa Fong
MA, Stanford University
Teaching in the San Francisco Bay Area
Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts
We can sketch a parabola using its relationship to the "parent," or most basic parabola, y = x^2. If we know some key points and features of the parent, as well as how changes in the equation affect the graph, we can use words or a sketch to graph a transformed parabola. A change inside the squared base represents a change on x, and will result in a horizontal shift, a change outside the squared base will represent a vertical shift, a negative leading coefficient will reflect the graph across the x axis, and a leading coefficient other than one will cause a vertical stretch or compression. While making a table of values will always work for graphing a parabola, transformations are a very useful shortcut that can be applied to other functions, as well.
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Alissa Fong
M.A. in Secondary Mathematics, Stanford University
B.S., Stanford University
Alissa has a quirky sense of humor and a relatable personality that make it easy for students to pay attention and understand the material. She has all the math tips and tricks students are looking for.
Your tutorials are good and you have a personality as well. I hope you have more advanced college level stuff, because I like the way you teach.”
Thanks alot for such great lectures... I never found learning this easier ever before... keep up the great work.... :)”
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The Vertex and Axis of Symmetry
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