Question

Which of the following represents a linear function?                    these are the options a, c or b How do you know?these are the options it creates a simple shapeit passes the vertical line testit is a straight line

Answer 1

We want to identify the linear function.

Of course,

a linear function is going to be a line

The vertical line test is for understanding whether it is a function or not.

By vertical line test,

Picture 1 [passes]

Picture 2 [passes]

Picture 3 [fails]

Now, we can clearly see that Option B is the a straight line, hence a linear function.