Again, we can tell right away that we have a linear function. This function represents the relationship between time and money.
Let's go through our checklist of what we should look at when given graphs.
• What are the labels, scale, and units on the graph? What does that tell me about the situation? (View answer)
• What pattern do I see? Is it consistent/does it stay the same? What does that tell me about the slope? (View answer)
The slope for this graph is $
per hour.
• Where does the graph begin? Is it continuous? Where does it cross the y-axis (y-intercept) and what does that mean? (View answer)
Therefore, the y-intercept for this graph is (0
What are my domain and range in this context? Are there any values that wouldn't make sense? (View answer)
.
.
By finding the amount of $60 on the vertical axis, you can follow a horizontal line through the value, until it meets the graph. Follow a vertical line straight
This means that the number of hours of work needed to earn
down from there, until it meets the horizontal axis. There, the value in hours is
$60 is
hours.