Expansions and compressions are transformations that change the length or width of the graph of a function.
To graph y = a*f (x) if a> 1, the graph of y = f (x) is expanded vertically by a factor a. We have then: f (x) = 2/5 x ^ 2-2 The function g (x) is a vertical stretch of f (x) by a factor of 2: g (x) = 2f (x) g (x) = 2 (2/5 x ^ 2-2) g (x) = 4/5 x ^ 2-4
Answer: The equation of g (x) is: g (x) = 4/5 x ^ 2-4
