graph inequalities on a number line

To graph an inequality, treat the , or ≥ sign as an = sign, and graph the equation. If the inequality is , graph the equation as a dotted line. If the inequality is ≤ or ≥, graph the equation as a solid line.

How do you graph greater than or equal to on a number line?

A closed circle indicates “greater than or equal to” or “less than or equal to,” while and open circle indicates “greater than” or “less than”. We can tell from the inequality that our line plot will only have closed circles, as the only symbol is “greater than or equal to.” Subtract from both sides.

How do you graph two inequalities?

To graph a linear inequality in two variables (say, x and y ), first get y alone on one side. Then consider the related equation obtained by changing the inequality sign to an equality sign. The graph of this equation is a line. If the inequality is strict ( ), graph a dashed line.

How do you shade inequalities on a graph?

Unless you are graphing a vertical line the sign of the inequality will let you know which half-plane to shade. If the symbol ≥ or > is used, shade above the line. If the symbol ≤ or

How do you graph inequalities on a TI 84?

How do I graph inequalities on a TI-84 Plus C Silver Edition graphing calculator?
Press the [Y=].Press [3] [X,T,O,n] [+] [2] on Y1.Press [◄] six times until the symbol to the left of Y1 is flashing.Press [ENTER] [▼] to select the Line area.

What does it mean to graph on a number line?

Integers and real numbers can be represented on a number line. The point on this line associated with each number is called the graph of the number. Notice that number lines are spaced equally, or proportionately (see Figure 1).