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

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Graphing Radical Equations using Shifts - Problem 5

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

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If you know the "parent" graph and some key features about the graph of y = root (x), then you can use transformation rules to sketch other square root functions. Here we look at reflections caused by adding negative signs. If there is a negative out in front of the radical, that causes all of the y-values to change sign, which shows up as a reflection across the x-axis. Conversely, a negative x under the square root shows up as a reflection across the y-axis. We confirm this by choosing an x-value to input. We also consider what this does to our domain (inputs) and range (outputs).

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