Question

The function f(x) is given by the set of ordered pairs.

{(8, –3), (0, 4), (1, –5), (2, –1), (–6, 10)}
Which is true regarding the function?
f(–3) = 8
f(3) = 5
f(8) = 0
f(–6) = 10

Answer 1

D f(–6) = 10

Explanation:

I took the test and wanted to help people who are struggling.

(–6, 10)} matches f(–6) = 10 therefor it is correct

Answer 2

f(–6) = 10

Explanation:

Each ordered pair represents the pair (x, f(x)).

The domain (set of possible x-values) is the list of first numbers in the pairs:

{8, 0, 1, 2, -6}

Any number not on this list will not appear as x in f(x). This eliminates f(-3) and f(3).

The pair for f(8) is (8, -3), so f(8) = -3, not 0.

The pair for f(-6) is (-6, 10), so f(-6) = 10, as shown in the last answer choice.