Answer:
![y=-2x-4](https://img.qammunity.org/2020/formulas/mathematics/college/qx2xinb8xrznakpmbvdt6gcc4s6d7qbk94.png)
Explanation:
The slope-intercept form of the line is:
![y=mx+b](https://img.qammunity.org/2020/formulas/mathematics/high-school/8nudzfk4b5l0arb9iixag2w8am6zn99zlr.png)
Where m is the slope and b the intersection with the y-axis.
You can see in the graph that line intersect the y-axis at
, then:
![b=-4](https://img.qammunity.org/2020/formulas/mathematics/middle-school/5mgx0n0itkxq15k0vgh8gewe86906w8j1y.png)
Choose two points and substitute them into the formula for calculate the slope. This is:
![m=(y_2-y_1)/(x_2-x_1)](https://img.qammunity.org/2020/formulas/mathematics/high-school/pj0y5tg37a7a9ase0auiwe687ez8iaw2vl.png)
Let's pick the points (-4,4) and (-6,8). The the slope is:
![m=(4-8)/(-4-(-6))=(-4)/(2)=-2](https://img.qammunity.org/2020/formulas/mathematics/college/ufja1j1kbscwuc7cuqwmgafs7fxw6gmwdw.png)
Substituting into the equation, you get:
![y=-2x-4](https://img.qammunity.org/2020/formulas/mathematics/college/qx2xinb8xrznakpmbvdt6gcc4s6d7qbk94.png)