we are graphing inequalities, and the "<" has a line under it i just dont know how to do that on the computer
Are you using MyMathLab or Course Compass as the software to do your homework? You should see a "palette" to be able to choose the open or filled-in circle. When the inequality includes the "equals to" line, you want the filled-in circle. You should be able to click it with your mouse, then click the spot on the graph. Let me know if you have any other problems/questions.