Question

the change in water level of a lake is modeled by a polynomial function, w (x). describe how to find the x - intercepts of w (x) and how to construct a rough graph of w (x) so that the parks department can predict when there will be no change in water level. you may create a sample polynomial to be used in your explanation.

Answer 1

btw, this is the whole question there is no data for the function. i think im supposed to make my own

Answer 2

The x-intercept is found by setting y = 0 and solving for x.

Answer 3

so how would answer this question? like what are they asking for

Answer 4

@RadEn

Answer 5

because w(x) is a polynomial function, you would find it's roots or zeros to find it's x-intercepts. they're really all the same thing.

to find when there is no change on water level, you'd look for where the graph flattens out, like a horizontal line.