Case Study Regression equation

Using the equation, for example, in a particular product ( Cars or Mobile Phone ) and virtual numbers and their impact on demand, and explain it ( only 1 Page )

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Regression equation: linear, additive 

   eg: Y = a + b1X1 + b2X2 + b3X3 + b4X4 

Y: dependent variable 

a: constant value, y-intercept 

Xn: independent variables, used to explain Y 

bn: regression coefficients (measure impact of independent variables)