The graph in the image shows a straight line with a positive slope, meaning the line moves upwards from left to right. This behavior is characteristic of a linear increasing function. The correct answer is:

D. Linear increasing

Would you like more details on how to identify this, or do you have any questions?

Here are five related questions to expand your understanding:

1. How do you distinguish between linear and exponential growth on a graph?
2. What does the slope of a line represent in a linear equation?
3. How can you identify linear decreasing behavior from a graph?
4. What is the key difference between exponential decay and exponential growth?
5. How do changes in the slope affect the steepness of a linear graph?

Tip: In a linear function, the rate of change is constant, meaning the graph forms a straight line.