Question

Let ( f = (-1, -3), (2, -1), (9, -4) ). Find ( f(-1) ).

A) -3
B) -1
C) -4
D) 0

Answer 1

In the function f = {(-1, -3), (2, -1), (9, -4)}, f(-1) is found by locating the pair where the first element is -1. The corresponding output is -3, which makes the answer A) -3.

Step-by-step explanation:

The student is asking to find f(-1) in the given function f = {(-1, -3), (2, -1), (9, -4)}. In such a function, the first number in each pair represents the input (or x-value) and the second number represents the output (or f(x)-value). To find f(-1), we need to locate the pair where the first number is -1. In this list, the pair (-1, -3) corresponds to f(-1) = -3.

Therefore, the correct answer is A) -3.