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Graphing Quadratic Equations  Problem 4
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
If your parabolic function is in vertex form, y = a(x  h)^2 + k, and if you have practiced graphing with changes to a, h, and k each individually, then you are ready to put all of the transformations together. Begin with a sketch of the parent parabola, y = x^2. A negative "a" will make the parabola open down, if the absolute value of "a" is greater than one, then the parabola will get skinnier, and if the absolute value of "a" is a number between 0 and 1, then the parabola will get wider. A change on "h" represents a horizontal shift in the counterintuitive direction, and a change on "k" is a vertical shift.
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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.
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Sample Problems (11)
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Graphing Quadratic Equations
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Problem 2 5,371 viewsGraph:
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Problem 3 4,854 viewsGraph:
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Problem 4 914 views 
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Problem 11 646 views
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Violet · 1 year, 1 month ago
I do prefer seeing a person as i learn cause i picture myself inside the classroom