Find the slope:
y = -X – 1

-1

Explanation:
This question is written in slope-intercept form, which is this equation: y=mx+b. Here’s what each of the variables mean:

Y=the y axis
M=the slope
X=the x axis
B=the point on the line that intercepts the y axis (the y-intercept)

And we can compare y=mx+b to y=-x-1 to see what value is in place of the “m” variable to find the slope.

y=mx+b
y=-x-1

It’s not really clear until we rewrite y=-x-1 to y=-1x-1:

y=mx+b
y=-1x-1

We can see that -1 is in place of the m variable, concluding that the slope is equal to -1.

I hope this helps! Please comment if you have any questions.