2. A function exists if a graph shows a relationship between the x value and the y value, and passes the vertical line test (meaning there is never more than one output per input.
3. The functional relationship here is between family income (i) and student test scores (t). t = f(i).
4. As family income increases, test scores also increase.
5, 6, 7. The graph is not linear because the rate of change is not constant.
8. Yes, because there is a consistent positive change after every x value.
Part B:
1. A function does not exist if there is more than one Y value per X value.
2.
3. This graph is not a function because a vertical line passes through three separate points.
Dave you did a good job finding a graph that is not a function. your info is easy to read and understand
ReplyDeletedave,
ReplyDeletenice job on the first example and your explanations for why it is a function. your second example should have been related to some sort of online periodical. there's no explanation for where this graph appears in real life.
professor little