Answers Mathematics 8 Using Function Notation — QuizQuestion 1

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.

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