Learn how to add a constant value outside a function in math with example

Adding outside the function, example: f(x) = x² + 2

Moves left along the x-axis

In this case, adding outside of the function means changing the original function by adding a constant value outside of the function. Let’s consider the function f(x) = x² + 2.

To add outside of the function, we simply add a constant value to the output of the function. For example, if we wanted to add 3 outside of the function, we would have:

g(x) = f(x) + 3

Substituting the original function in g(x), we have:

g(x) = (x² + 2) + 3
g(x) = x² + 5

So the function g(x) is the result of adding 3 outside of the function f(x). We can notice that the shape of the graph of g(x) is the same as the graph of f(x), but it has been shifted vertically by 3 units.

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