Question

Which graph represents a linear function?

Answer 1

It would be the second one with a straight line

Answer 2

Option 2.

Explanation:

First graph as shown in the picture is symmetric to the y-axis and it's a graph of a parabola with vertex at origin.

Second graph is a straight line passing through origin.Therefore all the points lying on a straight line can be represented by a linear function.

Option 2 is a linear function.