what is the domain,range ETC

Answer:
Domain: - infinity<X<infinity
Range: 2.5>Y> - infinity
Step-by-step explanation:
Because we don't know the strarting point, so we can just assume that the X values are staring from negative infinity and ending at possitive infinity.
Then, we can see the highest Y value is at 2.5 and then decresing infinitly.
That's why we can write the domain and range this way.