Which expression can be simplified to find the slope of the trend line in the scatterplot?

On a graph, a line goes through points (4, 21) and (8, 35).
21-35/8-4
8-4/21-35
35-21/8-4
8-4/35-21

The correct expression is   .

Step-by-step explanation:

Given,

Two pints are (4,21) and (8,35)

To find the slope of the line passing through the points.

Formula

The slope of the line passing through () and  () is m =

Now,

Putting, we get,

m =   =

Hence,

The correct expression is