The scatter plot shows the length of a spring when a stretch force is applied. The equation represents the linear model for this data. y = 0.73x + 1 What does the number 1 in the equation mean in this context? The spring will stretch 1 inch for every pound of force applied. The spring has no stretch when a force of 1 pound is applied. The spring has a length of 1 inch when no force is applied. The spring stretches a distance of 1 inch when a force of 0.73 pound is applied. The spring requires a force of 0.73 pound to stretch 0.73 inch.