Graphing Inequalities

Today we began inequalities.  An inequality says that two quantities are not equal. Click on inequality for more explanation.

We learned how to write an inequality to represent a situation such as:

Situation:  My classroom can hold no more than 30 students.
Inequality:   s < 30   The number of students can be less than or equal to 30.

Situation:  The waiting room has at least 15 people in it.
Inequality:   p > 15    The number of people in the waiting room is 15 or more people.

We also learned how to graph inequalities.  If the inequality is < or > then you would use an open circle because the solution does not include the value.  If the inequality is < or > then you would use a closed circle because the solution does include the value.

Here are some examples.

Tuesday we will solve 1-step inequalities and graph the solutions.

Images used from Google images.