Since the blue line is lower than the red line the market sells pinapple at a lower rate
mathematically
Grocery store sells
4 pinapples = $9.60
3 pinapple=x
![x=3*(9.60)/(4)](https://img.qammunity.org/2023/formulas/mathematics/college/deh4o2puktotenxn0sk45uyn74by4p7t3u.png)
![x=7.2](https://img.qammunity.org/2023/formulas/mathematics/college/unur3pu9tpu0mmqryr4cv7hrb9xug1j0jo.png)
3 pinapples at the grocery store cost $7.20
compare to
3 pinapples at the market cost $6.60
The market sells pinapple at a lower rate