Alinear regression equation has b = 3 and a = – 6. what is the predicted value of y for x = 4?

The predicted value of y for x = 4 is 6

Step-by-step explanation:

Linear regression models are used to predict the relationship between two variables. The regression equation is usually expressed as:

where y is the dependent variable and x is the independent variable, a is the intercept on y axis while b is the slope of the regression line.

since a = -6

         b = 3

When x = 4,

∴ Predicted value of y = -6 + (3 x 4)

                                        = -6 + 12

                                            = 6

The predicted value of y for x = 4 is 6.