Grade 7 · Unit 1 · Lesson 3 · part 3 of 5
Which pairs fit?
The landscaper's fee is proportional: $35 for every hour, always multiplying by 35.
Which pairs fit?
The landscaper's fee is proportional: $35 for every hour, always multiplying by 35. Which of these pairs fit that relationship?
| Hours | Charge | 35 × hours | Fits? |
|---|---|---|---|
| 6 | $210 | 35 × 6 = 210 | Yes |
| 10 | $350 | 35 × 10 = 350 | Yes |
| 2 | $80 | 35 × 2 = 70, not 80 | No |
To check a pair, multiply the input by the constant and see if you get the output. 6 hours for $210 fits, because 35 times 6 is 210. 10 hours for $350 fits. 2 hours for $80 does not, because 35 times 2 is 70, not 80. One pair that does not fit means that pair is not part of this relationship.
Check a pair Multiply the input by the unit rate. If you get the output, the pair fits. If not, it does not.