Example Table shows the number of visits of different lengths by cleaning companies. The length of a visit is represented by x and the cost of a visit is represented by y. Each cleaning company charges a flat fee for visiting the house or apartment plus an hourly rate.
Length of Visit (x) Cost (y)
Find the equation of the line of best fit.
What does the slope represent?
Length of visit
Cost of visit
What does the Y-intercept represent?
Length of visit
Cost of visit
How much would a visit of 5 hours cost?
If the cost of a visit totals $175, about how many hours were the cleaning companies visiting?
Example Table shows the number of grams of carbohydrates and the number of calories of six different foods.
Grams of Carbohydrates Calories
Which equation best represents the line of best fit for this set of data? Y = kx + b, Y = mx + c, or Y = ax^2 + bx + c?