What is the significance of hypotension anemia?

Black out or more. Hello there - anemia is reduction in red blood cell (rbc) count - and specifically reduction in hemoglobin concentration which is the oxygen carrying agents in the RBC - and yes, anemia will cause hypotension because the blood is thinner and the oncotic pressure (viscosity or concentration pressure) is down - so this compounded effects of low blood pressure and low oxygen carrying capacity is bad.
Different condition. They are 2 separate conditions. Hypotension means low blood pressure and anemia refers to low blood count. They can co-exist and can be caused by common conditions.
No such thing. Hypotension means the blood pressure is low. There are many causes including acute blood loss which would also result in anemia. Anemia means that there is a deficiency of red blood cells in the circulation. There are many causes including acute blood loss which would also result in hypotension. Aside from the above, these are two separate conditions.