Question

During an experiment that Paul and Dawn performed, the stretch of a spring was directly proportional to the force applied to the spring. When they put the data on a graph they would expect to have what type of curve?

Answer 1

When two values are said to be directly proportional, it means that one value can directly influence the other. So if you double the first value, the second doubles... if you take half the first value, you get half the second. This can be represented visually as a straight line.