Dafttemplar,
Maths and Physics aren't needed to study and pass all the exams up to ATPL level.
If you want to get into REX, apparently they got some maths and physics testing, as part of their selection.
Please check the Qlink pilot website (dash 8), also check Air NZ, Cathay Pacific and Singapore Airlines websites,
under education requirements for pilots, you will notice, they require a Higher School Certificate OR Bachelor Degree.
If you meet the 1500 hours flying experience mark, you can apply to the U.S airlines, under the E3 visa category,
but you need a Bachelor degree or 6 years work experience.
**You say that your're not interested in general aviation but want to go straight into an airline, then take note what's written below:
Cathay Pacific and Singapore Airlines take on Frozen ATPL pilot license holders from Australia, with at least 250 hours flying experience,
it's the minimum to apply.
If you get your CPL/IR/ATPL subjects passed, get a B737/800 type rating and apply to "Royal Air Maroc" (Morocco), they take on
pilots with a Frozen ATPL and type rating or apply to "Vietjet", in Vietnam, they're ordering 100 B737MAX aircraft.
If you choose to go down this path, it will cost you 80k (CPL) plus 30k (Multi Engine Instrument Rating), 40K (B737/800 type rating),
that's 150k, and possibly still no job.
That's why i recommend you get a flight instructor rating, work your way through general aviation.
Looking at big jets and sitting in the flight deck is all "lipstick", until you actually get there.
As i mentioned before, it takes a lot of work, money, time and effort, just achieve the entry level qualifications.
You will realise that when you start your training, if you are going to continue thinking about airlines when you're training,
be aware, there are a lot of pitfalls along the way.
All the very best, which ever direction you choose.