Evaluate the function for values of x that approach 1 from the left and from the right. f (x) = 7 x3 - 1

In the table shown you can see the values for the function when it approaches zero, from the right and from the left. In the graph you can notice that the function tends to - 1 for values close to 0 (both from the right and from the left), as might be expected from a function that cuts the "y" axis at - 1.