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Given the graph of a function f. Identify the function by name. Then Graph, state domain & range in set notation:A) f(x) +2B) f(x) -2

Given the graph of a function f. Identify the function by name. Then Graph, state-example-1
User Brendon Dugan
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1 Answer

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The function in the graph has the name of square function.

The domain of a function is all values of x the function can have. The domain of this function is all real numbers:


\mleft\lbrace x\in\R\mright\rbrace

The range of a function is all values of y the function can have. The range of this function is all positive numbers, including zero:


\mleft\lbrace y\in\R\mright|y\ge0\}

In order to graph f(x) + 2, we just need to translate the graph 2 units up. To find the new points, we need to increase all y-coordinates by 2:

(-2, 6), (-1, 3), (0, 2), (1, 3), (2, 6)

Domain: {x ∈ ℝ}

Range: y ≥ 2

Then, in order to graph f(x) - 2, we just need to translate the graph 2 units down. To find the new points, we need to decrease all y-coordinates by 2:

(-2, 2), (-1, -1), (0, -2), (1, -1), (2, 2)

Domain: {x ∈ ℝ}

Range: y ∈ ℝ

Given the graph of a function f. Identify the function by name. Then Graph, state-example-1
Given the graph of a function f. Identify the function by name. Then Graph, state-example-2
User Ed Barahona
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3.0k points