1
QuizMultiple Choice

Using Function Notation — Quiz

Question 1 • Mathematics 8

Which choice shows a function with a domain of {−4,−2,2,4} ?

Answer
A
{(−4,2), (−2,1), (2,0), (4,5)}
B
Image with description On a coordinate plane, a line goes through (negative 2, negative 2) and (0, negative 3).
C
Image with description On a coordinate plane, a vertical line is at x = 2.
D
{(1,−4), (0,−2), (2,2), (6,4)}

Explanation

A function’s domain is the set of its input values, or x-coordinates. In choice A, the x-coordinates are −4, −2, 2, and 4, exactly the requested domain. Choice D has a different set of x-coordinates, while the line in B has a domain extending beyond those four values.

AI-written and checked against the verified answer.

Next