The graphs below are traces for a function at $x=0.5$ and $y=2$.

Trace for $x=0.5$ has		Trace for $y=2$ has
a point at $(1,a\cdot 0.25\cdot 1+b\cdot 0.5\cdot 1)$.		a point at $(1,a\cdot 1\cdot 2+b\cdot 1\cdot 4)$.

If $ax^{2}y+bxy^{2}$ then $a$ = and $b$ = .