Question

1. which kind of functions would best model the data points (-1,22), (0,6), (1,-10), (2,-26), and (3,-42).
A. linear
B. quadratic
C. exponential
D. none of the above
2. which kind of function would best model the data points (-3,18), (-2 ,6), (-1,2), (0,11) and (1,27)
A. linear
B. quadratic
C. exponential
D. none of the above
3. what function can be used to model data pairs that have a common ratio.
A. linear
B. quadratic
C. exponential
D. none of the above

Answer 1

willing to gives medals to whoever helps me

Answer 2

ok so start off by sketching the graphs...but hey guess what you're sitting at a computer so just plug'em inta spreadsheet and produce a graph

Answer 3

Now you tell me which is which

```
linear is a straight line
quadratic is curved and has a single turning point
exponential is curved and has a line it never crosses (I can't recall what its called atm)
```

Answer 4

btw if you're still having issues with identifying practice here first. It should help

```
http://www.ixl.com/math/algebra-1/identify-linear-quadratic-and-exponential-functions-from-graphs
```

Answer 5

As for question 3, if x and y have a common ratio, then y is proportional to x and a graph illustrating proportionality is always a straight line and therefore linear.

Note: a graph that shows a directly proportional relationship is a special case scenario of linear graphs and it passes through the origion (this last part was just FYI)