f(x) = x
The function f(x) = x represents a linear function, where the output (f(x)) is equal to the input (x)
The function f(x) = x represents a linear function, where the output (f(x)) is equal to the input (x). In other words, whatever value you substitute for x, the function will return the same value.
To better understand this function, let’s look at some examples:
Example 1:
If we substitute x = 4 into the function, we get f(4) = 4. This means that when x is 4, f(x) is also 4.
Example 2:
If we substitute x = -2 into the function, we get f(-2) = -2. So when x is -2, f(x) is -2.
Example 3:
If we substitute x = 0 into the function, we get f(0) = 0. Therefore, when x is 0, f(x) is 0 as well.
The graph of this function is a straight line that passes through the origin (0, 0) and has a slope of 1. This means that for every unit increase in x, the value of f(x) also increases by 1. Similarly, for every unit decrease in x, f(x) decreases by 1.
Remember, this function is a simple representation of the identity function, where the output is always equal to the input value.
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