3. Rate of Change and Slope
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Can you identify a pattern of change between each row in the table?
$8/11/lb
To determine the rate of change in the given table, let's see if we can identify a pattern of change between each row. Note that weight
is the independent variable, usually represented by x, and cost
is the dependent variable, usually expressed by y.
| Change in x | Weight (lb) | Cost ($) | Change in y |
|---|---|---|---|
| 11 | 8 | ||
| +11 ↪ | 22 | 16 | +8 ↩ |
| +11 ↪ | 33 | 24 | +8 ↩ |
| +11 ↪ | 44 | 32 | +8 ↩ |
| +11 ↪ | 55 | 40 | +8 ↩ |
Change in x= 11, Change in y= 8
The rate of change is $ 811 per pound.