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The Vertex and Axis of Symmetry  Problem 8
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
As with any function in math, you can create a graph by choosing x values to substitute and finding their corresponding y values. This process an be much less labor intensive if you choose your x values in a clever way. Since parabolas have key points around the vertex, if we can find the vertex to begin with and use that as the center of the table, we'll be able to see where the parabola has its turning point. The first step is to use x = b/2a to find the x value of the vertex, and then choose x values on either side of that vertex value. If done correctly, the y values in the table will be symmetric around the vertex. You'll learn more shortcuts with practice.
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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.... :)”
You seem so kind, it's awesome. Easier to learn from people who seem to be rooting for ya!' thanks”
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