Question

I need some with this small question.

Answer 1

C and D are a function

Explanation:

You can use the vertical line test to check which graphs show a function

Answer 2

Answer choices C and D

Explanation:

Look at the graphs and image a line going down every y axis line. If there is more than one plotted point on a single line the graph is not a function. Choice A is incorrect because there are two points on line -1. Choice B is incorrect because there are two points on lines 1 and 2. Choices C and D only have one point on each line, making them the correct answers.