Unsure how to determine this equation

Start A boutique wants to determine how the amount of time a customer spends browsing in the store affects the 2 amount the customer spends 3 50 40 30 Amount spent (in dollars) 20 10 10 20 30 40 50 Browsing time (in minutes) The regression equation for the plot above is Y - EX. 40 | Ex 0 43 X