List of top Data Science Questions on Linear regression

Which model is represented by the following graph? 

The following graph represents:

When determining the line of best fit in linear regression, which method is used to minimize the deviation of the line from the actual data points?
Consider the formula given below:
y ~ f(x, β)
where x is a vector of independent variables and y is the dependent variable.
Identify the type of regression from the following.
Which type of variable does linear regression predict?
Assertion (A) : In real-life scenarios, a small RMSE value indicates a better model fit to the data and higher accuracy.
Reason (R) : A large RMSE value suggests that the model fits the data well.
Which type of analysis is suitable for examining the relationship between rainfall and crop growth and the amount of crop growth for a certain level of rainfall?