Question

Consider the graph of the quadratic function. Which interval on the x-axis has a negative rate of change?

Answer 1

Answer: it is D i just took the test

Answer 2

The average rate of change is defined as:

$AVR = \frac{f(x2)-f(x1)}{x2-x1}$

For AVR to be negative, it must comply with:

$x2 - x1> 0$

$f (x2)$

Therefore, we observe that the interval that fulfills these conditions is the whole interval to the right of the parabola.

Among the options given, this interval is:

1 to 2.5

Answer:

An interval on the x-axis that has a negative rate of change is:

D. 1 to 2.5