Answer:
The slope of the given linear function is -4.
Explanation:
We have been given the linear equation

The slope intercept form of a line is given by

Here, b is y-intercept and m is the slope.
On comparing, the given equation with the slope intercept form, we get
b = -9
m = -4
It means that the y-intercept is -9 and the slope of the line is -4.
Therefore, the slope of the given linear function is -4.