Answer:
The slope of the line is -1.
Explanation:
To find the slope of any line given two points, we can use the following slope formula:

We can see that we have the two points: (1,4) and (3,2).
Let's let (1,4) be (x₁, y₁) and let's let (3,2) be (x₂, y₂). So, substitute:

Subtract:

Divide:

So, the slope of our line is -1.
Since it's negative, this tells us that is is going downwards.
And we're done!