Scaling functions vertically: examples | Transformations of functions | Algebra 2 | Khan Academy
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https://www.khanacademy.org/math/algebra2/x2ec2f6f830c9fb89:transformations/x2ec2f6f830c9fb89:scale/e/scale-functions-vertically
The function k⋅f(x) is a vertical scaling of f. See multiple examples of how we relate the two functions and their graphs, and determine the value of k.
View more lessons or practice this subject at https://www.khanacademy.org/v/vert-function-scaling
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