SOLUTION
The given equation is:
![L(x)=20-0.4x](https://img.qammunity.org/2023/formulas/mathematics/college/2l5is8wy26lv50qz26ualco3zqqckpwri0.png)
The x intercept is gotten when L(x)=0, hence the x intercept is:
![\begin{gathered} 0=20-0.4x \\ 0.4x=20 \\ x=(20)/(0.4) \\ x=50 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/sh2tctn53im2o7e6nt7utu4nh2fgbyh100.png)
Therefore the coordinate of the x intercept is (50,0).
The y intercept is gotten when x=0, hence the y intercept is:
![\begin{gathered} L(x)=20-0.4(0) \\ L(x)=20 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/3gllsoxz9gz8h3cd1ofisi8akwcxafdsi7.png)
Therefore the coordinate of the y intercept is (0,20).
Comparing the equation with y=mx+b it follows that the slope is:
![m=-0.4](https://img.qammunity.org/2023/formulas/mathematics/college/vnxci7dveb851opf02z87l9n2b4xx5ikz7.png)
The graph is shown below:
Since the slope is negative, then the learning rate is decreasing.