Question

The table shows input and output values for a cubic function. What is an approximate zero of the function?
x -2 -1 0 1 2
f(x) -11.5 -0.5 2.5 3.5 8.5


Use the drop-down menus to complete the statements.

A zero can be found between input values of
because
.

One zero of the function is approximately
.

Answer 1

A zero can be found between input values of -1 and 0 because f(-1) < 0 and f(0) > 0 (sign change).

One zero of the function is approximately -0.83 (≈ -5/6).