Linear Functions and Inequalities in Two Variables Chapter 3.
9-5 Inequalities in Two-Variables 9P6: Use inequalities.
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9-5 Inequalities in Two- Variables 9P6: Use inequalities
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Transcript of 9-5 Inequalities in Two-Variables 9P6: Use inequalities.
![Page 1: 9-5 Inequalities in Two-Variables 9P6: Use inequalities.](https://reader036.fdocuments.us/reader036/viewer/2022080902/56649ec55503460f94bd038b/html5/thumbnails/1.jpg)
9-5 Inequalities in Two-Variables
9P6: Use inequalities
![Page 2: 9-5 Inequalities in Two-Variables 9P6: Use inequalities.](https://reader036.fdocuments.us/reader036/viewer/2022080902/56649ec55503460f94bd038b/html5/thumbnails/2.jpg)
• Inequalities
• 1. Graph using Slope (m) and y intercept (b)• 2. Decide if line is solid ( ≥ or ≤ )
or dashed ( > or < )
• 3. Shade ALL Solutions ( > or ≥ ) Above line
• ( < or ≤ ) Below Line•
![Page 3: 9-5 Inequalities in Two-Variables 9P6: Use inequalities.](https://reader036.fdocuments.us/reader036/viewer/2022080902/56649ec55503460f94bd038b/html5/thumbnails/3.jpg)
• Example 1:
• y < 2x -1
![Page 4: 9-5 Inequalities in Two-Variables 9P6: Use inequalities.](https://reader036.fdocuments.us/reader036/viewer/2022080902/56649ec55503460f94bd038b/html5/thumbnails/4.jpg)
• Example 2:
• y ≥ - x + 2
![Page 5: 9-5 Inequalities in Two-Variables 9P6: Use inequalities.](https://reader036.fdocuments.us/reader036/viewer/2022080902/56649ec55503460f94bd038b/html5/thumbnails/5.jpg)
• Example 3:
• x < 3
![Page 6: 9-5 Inequalities in Two-Variables 9P6: Use inequalities.](https://reader036.fdocuments.us/reader036/viewer/2022080902/56649ec55503460f94bd038b/html5/thumbnails/6.jpg)
• Example 4:
• 4 ≤ 2x + y
![Page 7: 9-5 Inequalities in Two-Variables 9P6: Use inequalities.](https://reader036.fdocuments.us/reader036/viewer/2022080902/56649ec55503460f94bd038b/html5/thumbnails/7.jpg)
To write an inequality for a graph
Start with
y mx +b
Fill in alligator (inequality)
and m and b
![Page 8: 9-5 Inequalities in Two-Variables 9P6: Use inequalities.](https://reader036.fdocuments.us/reader036/viewer/2022080902/56649ec55503460f94bd038b/html5/thumbnails/8.jpg)
• Example 7:Doritos cost $3.00 a bag and 2 Liters cost $1.00. If you are
having a party and don’t want to spend more than $20, How many of each can you buy?
![Page 9: 9-5 Inequalities in Two-Variables 9P6: Use inequalities.](https://reader036.fdocuments.us/reader036/viewer/2022080902/56649ec55503460f94bd038b/html5/thumbnails/9.jpg)
Assignment
• Day 1: WS
• Day 2: 9-5/419-420/4-32 m4,34-39,46-53