Answer:
13.5
Step-by-step explanation:
For inverse variation:
y = k/x
2 = k/3
k = 6
Therefore, required equation is y = 6/x
Plot all points on the coordinate plane and combine these points by lines to get triangle ABC (see attached picture for details).
Write the equation of side AB:

To find y-intercept you have to substitute x=0, then:

The point
is the point where line AB intersects y-axis.