Practice problem
How can you tell if a Diophantine equation has integer solutions?
It's in the form of ax+by=cax+by=cax+by=c where gcd(a,b)\text{gcd}(a,b)gcd(a,b) divides ccc.
It's in the form of ax+by=cax+by=cax+by=c where ccc isn't a multiple of aaa or bbb.
Type a concept, like “slope” or “photosynthesis”.