A marketing manager conducts a simple regression analysis with units sold as a function of retail price. If the estimated slope coefficient equals -0.064 and the model explains 0.5625 of the total variation in units sold, what is the value of the sample correlation coefficient between units sold and selling price

Which statement best explains whether the table represents a linear or nonlinear function? input (x) output (y) 2 5 4 10 6 15 8 20 it is a linear function because the input values are increasing. it is a nonlinear function because the output values are increasing. it is a linear function because there is a constant rate of change in both the input and output. it is a nonlinear function because there is a constant rate of change in both the input and output.