Australia

One of the RBA's jobs is to combat inflation. It has very very few tools to do so, but they are broadly powerful. They would not typically care about home loans, but the housing bubble is now so big it is a major threat to our economy as a whole, so they have to not cause major and rapid defaults.

High energy and fuel prices drive inflation higher. All goods require energy to produce, and fuel to transport.

Increasing the cash rate decreases inflation because it makes debt more expensive. Higher interest rates lead to less investment in companies and the stock market because money in the bank provides a higher rate of return, which leads to less growth.

Higher interest rates then lead to reduced wages as businesses have less demand for staff, don't have investment for new projects, and need to focus on their debt.

Then you see reduction in consumer spending. People are making less money. People are paying more interest on their debt. People with money are putting it in the bank and not spending it because interest rates are better. It slows down the entire economy, which stops the price of goods going up so fast.

This can easily lead to a recession if not carefully managed. People are struggling to begin with, but to combat these high prices all the RBA can really do is increase the cash rate to make debt more expensive and money in banks not invested more lucrative

no, you're still spending, whether it's pies or petro they're both measured in the CPI

what they want is for you to buy less petrol and less pies.