Answer: The slope is -1
Explanation:
1. By definition, the equation of the line has the following form:
![y=mx+b](https://img.qammunity.org/2020/formulas/mathematics/high-school/8nudzfk4b5l0arb9iixag2w8am6zn99zlr.png)
Where m is the slope and b is the y-intercept.
2. The line given in the problem is
.
3. Keeping on mind the form of the equation of the line, you can identify that slope and the y-intercept are:
![m=-1](https://img.qammunity.org/2020/formulas/mathematics/middle-school/9pqfq159o2qtr2xjuvjoxjspybok9h2lx5.png)
![b=-4](https://img.qammunity.org/2020/formulas/mathematics/middle-school/5mgx0n0itkxq15k0vgh8gewe86906w8j1y.png)