I think that you are asking about the linear inequalities with two variables, so my answer is related to them.
First, you have to draw the boundary line (be careful, if your inequality does not contain the equal sign, the boundary line will be a dashed line, because the points on the line are not solutions to the inequality), which divide the coordinate system in two half-planes.
Second, you have to test a point on either sides of the line (the best point is the origin, (0, 0), if it is not on the boundary line). If that point satisfies the inequality, then there are all its solutions, otherwise they are to the opposite side.
The part that is shaded represents all the possible solutions. An inequality has solutions that are either left or righ, above or below or between two parts of a graph.
strict inequality
When the value indicated by the circle is a valid value for the inequality.
because writing out all the solutions is not necessarliy a correct answer but a number line is and because graphing out also helps you get a mental image of the concept.
Yes, they can.
The part that is shaded represents all the possible solutions. An inequality has solutions that are either left or righ, above or below or between two parts of a graph.
its useful in graphing! equations, inequalities, ect pretty much graphing!
strict inequality
-5+8n<-101
The definition of equivalent inequalities: inequalities that have the same set of solutions
tty
Yes.
When the value indicated by the circle is a valid value for the inequality.
Yes.
The line that includes whatever variables are included in the equation.
If it is joined by an "and" it does. If it is joined by an "or" it does not.
When the value represented by the circle is part of the solution set.