Questions: HW: Sections 2.1 - 2.7 Assignment
DETAILS MY NOTES SCOLALG7 2.4.011.MI. function is given. f(x)=5x-2; x=2, x=3 (a) Determine the net change between the given values of the variable. (b) Determine the average rate of change between the given values of the variable.
Transcript text: HW: Sections 2.1 - 2.7 Assignme
DETAILS
MY NOTES
SCOLALG7 2.4.011.MI.
function is given.
\[
f(x)=5 x-2 ; \quad x=2, x=3
\]
(a) Determine the net change between the given values of the variable.
$\square$
(b) Determine the average rate of change between the given values of the variable.
$\square$
Solution
Solution Steps
To solve the given problem, we need to evaluate the function at the specified values of \( x \) and then use these evaluations to find the net change and the average rate of change.
(a) Net Change: Calculate the function values at \( x = 2 \) and \( x = 3 \). The net change is the difference between these two function values.
(b) Average Rate of Change: Use the formula for the average rate of change, which is the difference in function values divided by the difference in \( x \) values.
Step 1: Calculate Function Values
We evaluate the function \( f(x) = 5x - 2 \) at the given points \( x_1 = 2 \) and \( x_2 = 3 \):
\[
f(2) = 5(2) - 2 = 10 - 2 = 8
\]
\[
f(3) = 5(3) - 2 = 15 - 2 = 13
\]
Step 2: Determine Net Change
The net change between the function values at \( x_1 \) and \( x_2 \) is calculated as follows:
\[
\text{Net Change} = f(3) - f(2) = 13 - 8 = 5
\]
Step 3: Determine Average Rate of Change
The average rate of change between the given values of \( x \) is computed using the formula:
\[
\text{Average Rate of Change} = \frac{f(3) - f(2)}{3 - 2} = \frac{13 - 8}{1} = 5.0
\]
Final Answer
The net change is \( \boxed{5} \) and the average rate of change is \( \boxed{5.0} \).