I need help with this homework problem bad!

A store manager wanted to know if there was any relationship of sales dollars to shelf space allocated. In a random sample of 12 different layouts resulting In the following data set what sdo you estimate your regression equation to Predict the value of y when x - 8? Slope? y-intercept ? Store shelf sood weekly sales 5 2 2 2 2 5 14 4 10 19 10 24 10 15 23 15 27 9 15 28 10 20 26 20 29 12 20 31