Wrong tire pressure can increase tire wear and decrease gas mileage. A manufacturer of new tires tested the tire for wear at different pressures with the below results. Tire pressure (PPI:pounds per square inch) is related to how many miles a tire lasts, (1000's of miles).

PPI Mileage thousands
30

To determine the relationship between tire pressure (PPI) and tire mileage (in thousands of miles), we need to analyze the given data.

However, you have only provided the tire pressure (PPI) and omitted the corresponding mileage. Please provide the complete data so that we can calculate the relationship between tire pressure and mileage.