The system y = 2x + 3 and y = 2x - 1 has how many solutions

No solution.

Step-by-step explanation:

Because they both equal y, we can make them equal to each other.

2x + 3 = 2x - 1

If we were to subtract 2x on both sides, then we would be left with this.

3 ≠ - 1

As you probably know, 3 is not the same as - 1.

This means these systems have no solutions.

It has no solutions. Two parallel lines never intersect.