10. Line of best fit or least squares regression line 11. Y in regression equation = dependent variable a. Y = a + bX b. "A linear regression line has an equation of the form Y = a + bX, where X is the explanatory variable and Y is the dependent variable. The slope of the line is b, and a is the intercept (the value of y when x = 0)." i. http://www.stat.yale.edu/Courses/1997-98/101/linreg.htm#:~:text=A%20linear%20regression%20line%20has,y%20when%20x%20%3D%200)