Considerations that are not a factor in deciding which forecasting model a firm should choose is Product. This is further explained below.
<h3>What is
a Product?</h3>
Generally, a product or substance is created with the intention of resale in mind.
In conclusion, Product is one of the considerations that should not be taken into account while selecting the appropriate forecasting model for a company.
Read more about Product.
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No product results in -1, hence δlmn is NOT a right triangle showing that lydia's assertion is incorrect
<h3>Perpendicular lines</h3>
In order to determine whether triangle lmn is right-angled, we need to determine the slope of lm, ln, and mn first as shown:
For the slope of lm:
![m_{lm} = \frac{2-0}{2-0}\\ m_{lm} =2/2\\m_{lm} =1](https://tex.z-dn.net/?f=m_%7Blm%7D%20%3D%20%5Cfrac%7B2-0%7D%7B2-0%7D%5C%5C%20m_%7Blm%7D%20%3D2%2F2%5C%5Cm_%7Blm%7D%20%3D1)
For the slope of ln:
![m_{ln} = \frac{-1-0}{2-0}\\m_{ln} =-1/2\\](https://tex.z-dn.net/?f=m_%7Bln%7D%20%3D%20%5Cfrac%7B-1-0%7D%7B2-0%7D%5C%5Cm_%7Bln%7D%20%3D-1%2F2%5C%5C)
For the slope of mn:
![m_{mn} = \frac{-1-2}{2-2}\\m_{ln} =-3/0 = \infty\\](https://tex.z-dn.net/?f=m_%7Bmn%7D%20%3D%20%5Cfrac%7B-1-2%7D%7B2-2%7D%5C%5Cm_%7Bln%7D%20%3D-3%2F0%20%3D%20%5Cinfty%5C%5C)
- If any of the two lines is perpendicular, hence the triangle lmn is right-angled.
- To check, we will take the product of the slopes and see if it is equivalent to -1.
Product of slope lm and ln
![m_{lm}\times m_{ln} = 1 \times -1/2\\m_{lm}\times m_{ln} = -1/2](https://tex.z-dn.net/?f=m_%7Blm%7D%5Ctimes%20m_%7Bln%7D%20%3D%201%20%5Ctimes%20-1%2F2%5C%5Cm_%7Blm%7D%5Ctimes%20m_%7Bln%7D%20%3D%20-1%2F2)
Since no product results in -1, hence δlmn is NOT a right triangle showing that Lydia's assertion is incorrect
Learn more on slopes here: brainly.com/question/3493733