Revise how to work out the gradient of a straight line in maths and what formula to use to calculate the value change in this Bitesize guide.

For example, spreadsheet software may tell the manager that the slope is 4 and the intercept is 24,000. This implies that the best-fit line has the equation: Total Cost = 4 (units produced) + 24,000.

Example 19.2: Simultaneous Equations with Intercept The demand-and-supply food example of Kmenta (1971, pp. 565, 582) is used to illustrate the use of PROC CALIS for the estimation of intercepts and ...