Point $A$ is at $(0, 0)$ and point $B$ is on the line $y = 4$. The slope of segment $AB$ is $\frac{2}{3}$. What is the sum of the $x$- and $y$-coordinates of point $B$
The line y = (2/3)x intersects the line y = 4 at the point (6, 4).
Therefore, the sum of the coordinates of that point is 10.
+612 
