• # Quiz - Absolute Value Equations and Inequalities

Posted by Kurt Waldner on 3/13/2020

Today in class, we took the 39 point quiz on absolute value equations and inequalities.

There is no homework.  Have a wonderful long weekend.  GO LIONS!!

• # Absolute Value Equations and Inequalities

Posted by Kurt Waldner on 3/12/2020

Today in class, we checked Page 401 #3-21 odds.  All of these problems revolved around being able to isolate the absolute value and then properly set up the and/or statement based on the inequality symbol.  If it is < or <, it is an and statement.  If it is > or >, it is an or statement.  We checked each solution and answered any questions in preparation for the upcoming quiz.

For homework, review for the quiz on absolute value.

• # Absolute Value Inequalities

Posted by Kurt Waldner on 3/11/2020

Today in class, we combined the inequality problems and the absolute value equations.  When there is an absolute value less than or less than or equal to a value, we can create an and statement.  When there is an absolute value greater than or greater than or equal to a value, we can create an or statement.  The examples are here.  We used the remainder of class to work on the assignment.

For homework, complete Page 401 #3-21 odds.  Quiz soon.

• # Absolute Value Equations

Posted by Kurt Waldner on 3/10/2020

Today in class, we checked the problems from Page 393.  Each of these problems involved absolute value.  Students need to make sure they follow the correct procedure for solving these problems.  First, the absolute value expression needs to be isolated.  This is accomplished by doing the opposite operation to both sides.  Once the absolute value is isolated, we need to write BOTH equations to solve (one positive and one negative).  We also noted that once the absolute value is isolated, if the solution is a negative then there will be NO SOLUTION (Ø).  After going over all the solutions and answering any questions, we started to look at graphing absolute value inequalities.  We'll look more into this tomorrow.

There is no homework.

• # Absolute Value Equations

Posted by Kurt Waldner on 3/9/2020

Today in class, we finished discussing how to solve absolute value equations.  We demonstrated why we DON'T want to distribute before we isolate the absolute value expression.  We also reminded students about no solution problems which will only occur when the absolute value is equal to a negative.  We then used the majority of the class to work on the assignment.

For homework, complete Page 393 #10-20 Evens and 24-32 Evens.

• # Returned Quiz and Absolute Value

Posted by Kurt Waldner on 3/6/2020

Today in class, we returned and checked the 35 point quiz on compound inequalities.  The results were good.  We then started working on solving absolute value equations.  Students need to remember to first isolate the absolute value expression and then set the expression equal to both the positive and negative solution.  We worked through a few examples and will hit more on Monday.

There is no homework.  Have a great weekend.  GO LIONS!

• # Quiz - Compound Inequalities

Posted by Kurt Waldner on 3/5/2020

Today in class, we took the 35 point quiz on compound inequalities.

There is no homework.

• # Review - Compound Inequalities

Posted by Kurt Waldner on 3/4/2020

Today in class, we reviewed both types of compound inequalities (and/or).  We did a matching activity where students were asked to match the inequality with the solution and the graph.  There were many contextual clues that students could use to help properly match the items (such as the inequality symbol, and/or, opposite operations to work backwards).  This was an extra credit opportunity for the quiz.

For homework, review for the quiz on compound inequalities.

• # Compound Inequalities

Posted by Kurt Waldner on 3/3/2020

Today in class, we checked Page 384-385 #9-20 and 23-27.  Students need to realize that the compound inequalities are just two simple inequalities set together with an and/or.  We will finish reviewing tomorrow and quiz on Thursday.

For homework, review for the quiz.

• # Returned Quiz and Compound Inequalities (And/Or)

Posted by Kurt Waldner on 3/2/2020

Today in class, we returned the 45 point quiz on solving and graphing simple inequalities.  Overall, the results were very good (if only we could eliminate the careless mistakes!!).  We then discussed and demonstrated the process for solving and graphing compound inequalities.  These are inequalities that are "made" of two inequalities, sometimes the same inequality, sometimes not.  These inequalities often contain the term and or or.  An example of an and statement is -3<2x-1<4.  This could be rewritten as -3<2x-1 and 2x-1<4.  An example of an or statement is -5x+2>9 or -3x-4<8.  Essentially, we solve these problems similar to a simple inequality.  The graphs are slightly different.  They contain two boundary points.  And graphs are of the overlap in the inequalities.  Or graphs typically have two different regions.  We went over three examples of each type of graph and then worked on the assignment.

For homework, complete Page 384-385 #9-20 and 23-27.