The research app for linear functions, interrelations between term and graph of a linear function can be analyzed independently.

In the left half of the two-part app the location of the starting line (dashed) is displayed and changed simultaneously to observe the effects on the parameters of the linear equation in the right half of the app. Conversely, in the right half of the app change the parameters of the linear equation and simultaneously observe the effects on the position of the straight line in the left half of the app. In both cases, the interfaces are in each case in the lower half of the application may be displayed with the x and y axis.