To find the rate of change (or slope) of the linear function, we can use two points on the line and apply the slope formula:

$m = \frac{y_2 - y_1}{x_2 - x_1}$

From the graph, I can identify two points that the line passes through:

• Point 1: $(-2, 0)$
• Point 2: $(2, 4)$

Now, let's calculate the slope $m$:

$m = \frac{4 - 0}{2 - (-2)} = \frac{4}{4} = 1$

So, the rate of change of the linear function is $1$.

Would you like more details, or do you have any questions?

Here are some related questions you might find helpful:

1. What is the equation of the line using the slope-intercept form?
2. How do you find the y-intercept of a linear function from a graph?
3. What does the slope of a linear function represent in real-world problems?
4. Can the slope of a line be negative? If so, what does that indicate?
5. How do you find the slope between two points algebraically without a graph?

Tip: The slope of a line indicates how much $y$ changes for a unit change in $x$. A positive slope means the line is increasing, while a negative slope indicates a decreasing line.