Question

If y = 9x - 7, which of the following sets represents possible inputs and outputs of the function, represented as ordered pairs?

A) {(1, 2), (0, 7), (3, 20)}
B) {(2, 15), (5, 38), (7, 10)}
C) {(3, 2), (4, 17), (0, 14)}
D) {(1, 7), (6, 47), (8, 55)}

Answer 1

The set that represents possible inputs and outputs of the function can be determined by substituting the given values into the equation. Only option A) {(1, 2), (0, 7), (3, 20)} satisfies the equation, making it the correct answer.

Step-by-step explanation:

The set that represents possible inputs and outputs of the function, represented as ordered pairs (x, y), can be determined by substituting the given values of x into the equation y = 9x - 7 and calculating the corresponding values of y. Let's check each set:

1. (1, 2): y = 9(1) - 7 = 2 (correct)
2. (0, 7): y = 9(0) - 7 = -7 (incorrect)
3. (3, 20): y = 9(3) - 7 = 20 (correct)

Therefore, the set that represents possible inputs and outputs of the function is (1, 2) and (3, 20). Option A) {(1, 2), (0, 7), (3, 20)} is the correct answer.