-Discussing how petrol prices have recently dropped
Part A
- The graph is a function due to the the fact each input (month and year) is paired with exactly one output (price per litre).
- Every month and year has exactly one price.
- The graph is not a linear function because there is not a constant rate of change between each value.
- It is also not a mathematical model as the output (price) is not dependent on the input (month and year).
Part B
- The criteria for a function is the relationship where exactly one input is paired with exactly one output.
- http://collegeapps.about.com/od/GPA-SAT-ACT-Graphs/ss/university-of-marlyand-college-park-admission-gpa-sat-act.htm: Maryland GPA and SAT/ACT correlation
- This graph does not show a relationship that is a function. This is because each input is paired with one or more output, not exactly one relationship.
- GPA and SAT/ACT score do not have a correlation, which results in no structure for the graph.
Sophia,
ReplyDeleteI really liked your graph and how it is applicable to the real world!
-Tyler
Nice work Sophia! Your answers are on point, and the data you shared is extremely relevant. Cheers.
ReplyDeletesophia,
ReplyDeletegreat job on both of these examples! your explanation for the first example is well done. the only thing you forgot to include was to represent the relationship using function notation.
your second example clearly shows a relationship that is a non function.
professor little