Why is the quotient of 3 and 6 an ambiguous phrase?

With both problems. a.s.a.p directions on photo ^

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

The coordinates r(1, -3), s(3, -1) t(5, -7) form what type of polygon? a right triangle an acute triangle an equilateral triangle an obtuse triangle