Question

A function with the domain (2, 3, 4) has a specific range. Determine the function and its range?

Answer 1

Answer: f(x) = 3x+2 range = {8,11, 14}

Explanation:

function = 3x + 2

range = (8,11,14)

just took the test! :)

Answer 2

The function with the domain {2, 3, 4} is the function y = 3x + 2, making the answer equal to A.
y = 3x + 2 y = 3(2) + 2y = 6 + 2y = 8
y = 3x + 2y = 3(3) + 2y = 9 + 2y = 11
y = 3x + 2y = 3(4) + 2y = 12 + 2y = 14
I notice that the range of the function y = 3x + 2 is {8, 11, 14}, making the answer equal to D.