The Parent Function is f(x) = 
What is parent function ?
A parent function represents the collection of some functions, i.e. family of functions. It is the simplest form of a family of functions.
A parent function always maintain the same highest degree and the same shape in graph with family of the parent function.
What is the required parent function ?
The required parent function is f(x) =
i.e. y = 
What are the required transformations ?
To get the given equation f(x) = 
We first multiply 2 with x, we get f(x) = 
Then we move this 6 units to the left, we get f(x) = 
Now, We have to go 2 units downwards, then f(x) =
Hence, The given equation.
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