Severity: Warning

Message: count(): Parameter must be an array or an object that implements Countable

Filename: controllers/formulas.php

Line Number: 37

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Given the function f(x) = x

Now, average rate of change is to be calculated for values from 3 to 1.

First, f(3) = 3

Then, f(1) = 1

Change in values between 3 to 1 is f(3) - f(1) = 10 - 2 =8

Given the function f(x) = x - 2.

Now, average rate of change is to be calculated for values from 10 to 6.

First, f(10) = 10 - 2 = 8

Then, f(6) = 6 - 2 = 4

Change in values between 10 to 6 is f(10) - f(6) = 8 - 4 =4