Question
Quick question, I'm learning about inequalities and graphs, so I just have one thing that I forgot. With an underscored < symbol, would the graph have the open dot or closed dot? I forgot to take notes on this. My bad! I think that a < symbol that is not underscored has the open dot. Is that correct?
Answers
bobpursley
if it is at the equal point, it includes that point. closed dot
Plotting inequalities. To plot an inequality, such as x>3, on a number line, first draw a circle over the number (e.g., 3). Then if the sign includes equal to (≥ or ≤), fill in the circle. If the sign does not include equal to (> or <), leave the circle unfilled in.
Plotting inequalities. To plot an inequality, such as x>3, on a number line, first draw a circle over the number (e.g., 3). Then if the sign includes equal to (≥ or ≤), fill in the circle. If the sign does not include equal to (> or <), leave the circle unfilled in.
Halp Me
That makes sense, Thanks!