What is least squares regression line? I need help answering this question:

(a) Find the least squares regression line (in terms of variables) and interpret

The least square regression line which relates .......................... to ...................... is ........................................ It describes a linear ................ for estimating the value of .................................... for a nominated value of..........................

(b) Find the slope of the least square regression line and interpret

The slope is ................... The slope of regression line predicts that, on average, ........................increases/decreases by .................(along with units) for one unit increase/decrease in ..........................

(c) Find they-intercept of the least square regression line and interpret

The y-intercept is................... The y-intercept of regression line predicts that, on average, the ........................when no ........................... is ..............(along with units). In the context of this question it is a valid (reliable)/invalid (not reliable) estimate because .....................

(d) Find the coefficient of determination and interpret

The coefficient of determination is ..........It indicates that, on average, ................% of variation in ........................... is explained by the variation in ............................. Only ............% of the variation in ............................ has been let unexplained/explained.