8.EEI.6c
Relate equations for proportional relationships (y=kx) with the slope-intercept form (y=mx+b) where b=0.
Example Problems
The table shows a proportional relationship between x and y.
Use the constant of proportionality, k, to write the equation for the proportional relationship.
| x | y |
|---|---|
| 4 | 3 |
| 8 | 6 |
| 12 | 9 |
Use the constant of proportionality, k, to write the equation for the proportional relationship.
The table shows a proportional relationship between x and y.
Use the constant of proportionality, , to write the equation for the proportional relationship.
| x | y |
|---|---|
| 1 | 2 |
| 4 | 8 |
| 7 | 14 |
Use the constant of proportionality, , to write the equation for the proportional relationship.
The table shows a proportional relationship between x and y.
Use the constant of proportionality, k, to write the equation for the proportional relationship.
| x | y |
|---|---|
| 4 | 2 |
| 8 | 4 |
| 12 | 6 |
Use the constant of proportionality, k, to write the equation for the proportional relationship.

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