Can I render an image along the X axis - so it's completely flat? or not I'm an interior design student and wanted a section of what my room would look like from the side image, and was wondering if I could get a rendered section from completely the side (x-axis) or do I have to use the camera function and not get it completely to the side? ]1

Many thanks!
Select the camera and click the camera tab of the Properties Window.

Then under lens change the type from perspective to orthographic and adjust the orthographic scale to fit your scene.

Now you can press N  to adjust the location and rotation.
These settings should get you where you want to be:


Location: (10, 0, 0)
Rotation: (90, 0, 90)