Answer:
54
Step-by-step explanation:
x-1=3
2xy=24
3+24=27
27·2=54
Answer:
Rate of change for the linear relationship modeled is ![\dfrac{-1}{2}](https://tex.z-dn.net/?f=%5Cdfrac%7B-1%7D%7B2%7D)
Step-by-step explanation:
As the there is a linear relationship in the points, so all these points will be on a single straight line. Hence the slope will be same throughout all the points.
We know that, the slope of the line joining (x₁, y₁) and (x₂, y₂) is,
![m=\dfrac{y_2-y_1}{x_2-x_1}](https://tex.z-dn.net/?f=m%3D%5Cdfrac%7By_2-y_1%7D%7Bx_2-x_1%7D)
Putting the points as (-1, 10) and (1, 9), we get
![m=\dfrac{9-10}{1-(-1)}](https://tex.z-dn.net/?f=m%3D%5Cdfrac%7B9-10%7D%7B1-%28-1%29%7D)
![=\dfrac{9-10}{1+1}](https://tex.z-dn.net/?f=%3D%5Cdfrac%7B9-10%7D%7B1%2B1%7D)
![=\dfrac{-1}{2}](https://tex.z-dn.net/?f=%3D%5Cdfrac%7B-1%7D%7B2%7D)
Rate of change is the slope of the line joining all these points.
321-207 is actually equals to 114 but I mean the equation is false