Spring Length Compared to Stretch Force y 10 The scatter plot shows the length of a spring, in inches, when a stretch force, in pounds, is applied. The equation represents the linear model for this data. 9 8 7 09 y = 0.73x + 1 Stretch length (inches) 5 What does the number 0.73 in the equation mean in this context? 3 2. 0 1 2 3 The spring has no stretch when a force of 0.73 pound is applied. 4 5 6 7 8 9 10 Stretch force (pounds) The spring stretches a distance of 1 inch when a force of 0.73 pound is applied The spring will stretch 0.73 inch for every pound of force applied. The spring has a length of 0.73 inch when no force is applied The spring stretches at a rate of 0.73 pound per inch​