Inequalities are defining part of the plane
So either they intersect in infinitely many point (either in a part of the plane or on a line) or they don't intersect
1 - zero solution
x+y > 1 and x+y <0
2 - infinitely many solution
x+y >2 and x + y > 3 (a part of the plane)
x+y >=2 and x+y <= 2 (a line)
They can have none, one or infinitely many.
Inequalities tend to have infinitely many solutions.
Yes.
A solution to a linear inequality in two variables is an ordered pair (x, y) that makes the inequality a true statement. The solution set is the set of all solutions to the inequality. The solution set to an inequality in two variables is typically a region in the xy-plane, which means that there are infinitely many solutions. Sometimes a solution set must satisfy two inequalities in a system of linear inequalities in two variables. If it does not satisfy both inequalities then it is not a solution.
Yes.
None, one or infinitely many
They can have none, one or infinitely many.
Inequalities tend to have infinitely many solutions.
Yes.
A solution to a linear inequality in two variables is an ordered pair (x, y) that makes the inequality a true statement. The solution set is the set of all solutions to the inequality. The solution set to an inequality in two variables is typically a region in the xy-plane, which means that there are infinitely many solutions. Sometimes a solution set must satisfy two inequalities in a system of linear inequalities in two variables. If it does not satisfy both inequalities then it is not a solution.
Yes.
If it is joined by an "and" it does. If it is joined by an "or" it does not.
There is only one solution set. Depending on the inequalities, the set can be empty, have a finite number of solutions, or have an infinite number of solutions. In all cases, there is only one solution set.
the answer is true
No. For example, the solution to x ≤ 4 and x ≥ 4 is x = 4.
A single linear equation in two variables has infinitely many solutions. Two linear equations in two variables will usually have a single solution - but it is also possible that they have no solution, or infinitely many solutions.
Systems of inequalities in n variables with create an n-dimensional shape in n-dimensional space which is called the feasible region. Any point inside this region will be a solution to the system of inequalities; any point outside it will not. If all the inequalities are linear then the shape will be a convex polyhedron in n-space. If any are non-linear inequalities then the solution-space will be a complicated shape. As with a system of equations, with continuous variables, there need not be any solution but there can be one or infinitely many.