I have a house from 75 with a slab on grade. The green plastic mat in the picture is on the concrete slab in some rooms. Could it contain asbestos? The brown underlayer feels soft and has slightly coarser fibers in a grid pattern.
Dangerous asbestos fibers are not visible. You cannot determine from a picture whether something contains asbestos or not, whether it's the carpet itself or any potential adhesive; if you want to be sure, you need to send in a sample for analysis.
Linoleum carpets typically have a jute fabric backing.