How do you graph inequalities in algebra?
There are three steps:
- Rearrange the equation so “y” is on the left and everything else on the right.
- Plot the “y=” line (make it a solid line for y≤ or y≥, and a dashed line for y< or y>)
- Shade above the line for a “greater than” (y> or y≥) or below the line for a “less than” (y< or y≤).
Can you graph 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. Finally, draw a line going from the circle in the direction of the numbers that make the inequality true. …
What does graphing and inequality shading look like?
We graph inequalities like we graph equations but with an extra step of shading one side of the line. It’s a line with one side shaded to indicate which x- y pairs are solutions to the inequality.
Which side do you shade when graphing inequalities?
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 < is used shade below the line. For a vertical line, larger solutions are to the right and smaller solutions are to the left.
How do you graph one variable inequalities?
To graph an inequality, find the value of the inequality on the number line. For less than or greater than draw open circle on the value of the variable. If there is an equal sign too, then use filled circle. Draw a line to the right or to the left for greater or less than.
How do you do Inequalz on TI-84?
The Inequality app on your TI-84 Plus calculator is a powerful mathematics tool. To start the Inequality app, press [APPS]. See the first screen. Then, press [ALPHA][x2] if necessary, use the down-arrow key to move the cursor to the Inequalz app, and press [ENTER] to select the app.