Find the Average Rate of Change y=3x-2 , (0,4)

$y = 3 x - 2$ , $(0, 4)$

Step 1

Substitute using the average rate of change formula.

The average rate of change of a function can be found by calculating the change in $y$ values of the two points divided by the change in $x$ values of the two points.

$\frac{f (4) - f (0)}{(4) - (0)}$

Substitute the equation $y = 3 x - 2$ for $f (4)$ and $f (0)$ , replacing $x$ in the function with the corresponding $x$ value.

$\frac{(3 (4) - 2) - (3 (0) - 2)}{(4) - (0)}$

Step 2

Simplify the expression.

Simplify the numerator.

Multiply $3$ by $4$ .

$\frac{12 - 2 - (3 (0) - 2)}{4 - (0)}$

Multiply $3$ by $0$ .

$\frac{12 - 2 - (0 - 2)}{4 - (0)}$

Subtract $2$ from $0$ .

$\frac{12 - 2 - - 2}{4 - (0)}$

Multiply $- 1$ by $- 2$ .

$\frac{12 - 2 + 2}{4 - (0)}$

Subtract $2$ from $12$ .

$\frac{10 + 2}{4 - (0)}$

Add $10$ and $2$ .

$\frac{12}{4 - (0)}$

Simplify the denominator.

Multiply $- 1$ by $0$ .

$\frac{12}{4 + 0}$

Add $4$ and $0$ .

$\frac{12}{4}$

Divide $12$ by $4$ .

$3$

Find the Average Rate of Change y=3x-2 , (0,4)

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