please explain step by step, simply and clearly thank you
810 points If T is a linear transformation give its matrix represen- tation with respect to the standard basis. If T is not a linear transfor- mation explain why not.
1.Tab=a+b,a-2b,3a-b
2.Tab=a+4b
3.Ta,b=2ab 4.Ta,b=a+1,b-1