Question

This is the graph of y = -x2 - 2x + 8.What is the range of this function?

Answer 1

The first thing you should know is that the range of a function is all the values it takes on the Y axis:

Then the range of this function is:

`(-\infty,9\rbrack`

Remember that when it includes the value of an extreme it is put with brackets and when it is infinite it must be a parenthesis