Question

Mary creates a table of values for a function and plots the points. She finds that the difference in the y values is the same. What kind of function did she graph?

Answer 1

The concept of slope applies to linear functions. Starting from the y-intercept, if one were to go up x units and over y units, they would land on a point of the graph. Using this information, if the difference in y-values is the same, we can conclude that Mary is dealing with a linear function.