function given by a table

To draw the graph of a function given by a table, we have to represent the x column in the horizontal axis and the y or f(x) column in the vertical axis.




Sometimes we use the table as an intermediate step, when we have the formula.

In the example: y = 2x - 1




Exercise: represent the graph of the function y = x2 + 1 (a parabola), by completing this table:

x y
-1  2
 0  1
 2  5






Licensed under the Creative Commons Attribution Non-commercial Share Alike 3.0 License