Question

Select the lines that represent functions.

Answer 1

Answer:

All of them except the squiggly one and the vertical one

Step-by-step explanation:

The rest are functions, two of them are lines, and the curved swoop is a parabola, which is also a function

Answer 2

Explanation

Function is a set of relation without same or repetitive domain. Because we are checking if the following graphs are function or not. It is easier to do line test.

How to check if the graphs are function.

1. Draw a vertical line.
2. If the line passes or intercepts the graph only one point. The graph is function.
3. If the line passes or intercepts the graph more than a point. The graph is not a function.

Overall, the graphs that are not function are the vertical line and the vertical curve graph.

Answer

• A horizontal line
• A line with slope or steepness
• Parabola aka curve graph (The graph is not a line. The question asks for lines which represent functions. I am not sure if they want all graphs that are function or just lines that are functions. A Parabola graph is also a function but not a line graph.)

Feel free to ask if you are confused.