What is a slope intercept form for the line that passes through the given point and is parallel to the graph equation (-1, -2), 3x – y=5

Kayla made observations about the sellin price of a new brand of coffee that sold in the three different sized bags she recorded those observations in the following table 6 is $2.10 8 is $2.80 and 16 is to $5.60 use the relationship to predict the cost of a 20oz bag of coffee.