The table shows four values of $x$ and their corresponding values of $h(x)$. There is a linear relationship between $x$ and $h(x)$ that is defined by the equation $h(x)=mx+b$, where $m$ and $b$ are constants. What is the value of $h(0)$?

x	2	5	8	11
h(x)	1	10	19	28