Which graph best represents the relationship between KE and mass?

First graph

Explanation:

Here we need to tell which graph best represents the relationship between kinetic energy and mass . As we know that ,

KE = 1/2 mv²

Here we will plot KE on y axis and mass of x axis. And it is in form of y = mx + c .On comparing the given equation with ,

y = mx + c

Therefore the line will be straight and will pass through origin with a slope v²/2 .

From the attached graphs , first graph is correct .