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Which is an ordered pair (input/output) for the function machine shown below

Which is an ordered pair (input/output) for the function machine shown below-example-1
User ATMTA
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1 Answer

11 votes
11 votes

The given function is


f(x)=x^2-5

The right ordered pair must be consistent with this function, that is, if we enter an x-value then we should get the y-coordinate as result.

For example, let's evaluate the pair (2, -1). First, we replace x = 2 in the function.


f(2)=(2)^2-5=4-5=-1

As you can observe, when we evaluate the function when x = 2, the function gave -1 as result, that means the pair (2, -1) belongs to this function.

Therefore, the right answer is b.

User BlueBright
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