Inequalities

Today in math class we learned about inequalities. But first we reviewed on changing point slope form to standard form. For inequalities, we learned that < means less than (we already knew that, but I can't say that for some of my fellow classmates) and > means greater than. Also that < means less than or equal to and > means greater than or equal to. We also learned how to graph them. For example: 2x + 4 < 10. You would subtract four from the problem so it would end up like: 2x < 6. Then you would divide by two to both sides and it would end up like: x < 3. When we graph it, you would put an open circle on 3 and draw a solid line going left on a number line.