Which equation represents a function?

enter image source here

1 Answer
SCooke
Apr 12, 2018

D.

Explanation:

A "function" describes the relationship between variables. I'm not sure what the figure in "C." is, but basically, A-C all represent assignment of some constant value to the variable.
ONLY D shows a variable relationship (function) between values of x and y.

Related questions
Impact of this question
1735 views around the world
You can reuse this answer
Creative Commons License