Using the function concept, it is found that graph D is not a function.
--------------------------
- In a function, one value of the input can be related to only one value of the output.
- In a graph, it means that for each value of x(horizontal axis), there can only be one respective value of y(vertical axis).
- On graphs A, B and C, it can be seen that each value of x has only one corresponding value of y, thus, they are all functions.
- On graph D, at the vertical line, for the value of x, there are infinite values of y, thus, it is not a function, and thus, option D is the answer to this problem.
A similar problem is given at https://brainly.com/question/24437482
