Whta is a linear regression equaton

A linear regression equation is a line so it has a form of y = mx + b, which is an equation of a line. You will also see it as Y = a + bX. In the form of Y= a +bX the b is the slope. 

There are different methods to fitting a line and the most common method is the method of least-squares. 

In statistics, linear regression is a linear approach to modelling the relationship between a scalar response and one or more explanatory variables. The case of one explanatory variable is called simple linear regression; for more than one, the process is called multiple linear regression

Step-by-step explanation:

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The answer is D g(x)=25x+15