The function $f$ is defined by $f\left(x\right)=a\left({2.2}^x+{2.2}^b\right)$, where $a$ and $b$ are integer constants and $0<a<b$. The functions $g$ and $h$ are equivalent to function $f$, where $k$ and $m$ are constants. Which of the following equations displays the y-coordinate of the y-intercept of the graph of $y=f\left(x\right)$ in the xy-plane as a constant or coefficient?

1. $g\left(x\right)=a\left({2.2}^x+k\right)$
2. $h\left(x\right)=a{\left(2.2\right)}^x+m$