Least-squares line through five upward points

Five observations are $(0,1)$, $(2,3)$, $(-1,0)$, $(1,1)$ and $(-2,0)$, written as $(x,y)$. Fit a straight line by least squares and report the slope plus the intercept.

$17/10$. With $\bar x=0$ and $\bar y=1$, $S_{xy}=7$ and $S_{xx}=10$, so the slope is $0.7$ and the intercept equals $\bar y=1$; together $1.7$.