scalling images without defining corners
I've inserted an image and I want it to scale with the other elements (e.g. points) when I move the mouse scroll. I think it can be done if you define two corners of the image as two different points.
The problem of doing this is that if I hide the corner points I can move the image dragging it with the mouse, I need to have the points visible and move them.
Does somebody know how to scale the image letting it "free" to drag it?
I leave here the file, so that you can see:
Thank you in advance!