From the figure given we can find the coordinate of E:
[tex]E=(3,-3)[/tex]
And we want to apply the following transformation:
[tex](x,y)\rightarrow(x,\frac{1}{3}y)[/tex]
So then we need to do the following in order to find the coordinate of E'
[tex]E^{\prime}=(x=3,y=\frac{1}{3}(-3)=-1)[/tex]
So the answer for htis case would be:
[tex]E^{\prime}=(3,-1)[/tex]
