This week we finished the mid-term examination and moved on to Chapter 5 -Graphing Inequalities and Systems of Equations. 5.1 is solving quadratic inequalities in one variable.
From Friday’s lesson, I realized that there are three ways for solving a quadratic inequality.
1st: using intervals and test points
2nd: using intervals and sign analysis
3rd: looking the parabola
We can choose one of three when we solve the problem.