1.

If two variables were directly proportional and an experiment were conducted gathering data, what would be the shape of the graph of the data?

2.

Suppose you were to have a spring. You experimented by adding weights to the spring and measuring how far it stretched for each weight. Then you produced a graph of weight (x axis) against stretch (y axis). By examining the graph, how would you determine whether or not the stretch was directly proportional to the weight?

3.

SECTION