1
1 solution
One solution.
Only 1.
1
zero solutions. If you plot these two lines, you will see that they are parallel and do not intersect.
It has 2 solutions and they are x = 2 and y = 1 which are applicable to both equations
I suspect the answer depends on the value of t.
Only one: (3,-2)
It has two equal solutions for x which are x = 2 and x = 2
2.
This has infinitely many solutions, for example: 0 + 1,000,000 1 + 999,999 0.5 + 999,999.5 etc.