The following information regarding a dependent variable $y$ and an independent variable $x$ is provided:

$x=90,(y\frac{-}{b}ar(y))(x-\stackrel{}{x})=-156$

$y=340,(x-\stackrel{}{x}{)}^2=234$

$n=4,(y\frac{-}{b}ar(y){)}^2=1974$

$SSR=104,$

$(y\frac{-}{b}ar(y))(x-\stackrel{}{x})=-156$

$(x-\stackrel{}{x}{)}^2=234$

$(y\frac{-}{b}ar(y){)}^2=1974$

The $y-$intercept is