Download presentation

Presentation is loading. Please wait.

Published byEleanore Bond Modified over 4 years ago

2
1. 6(2x – 3) – 2(6x + 1) = 10x 12x – 18 – 12x – 2 = 10x - 20 = 10x 10 x = –2

3
2. 15 + 2x – 4 = 9x + 11 – 7x 11 + 2x = 11 + 2x -11 2x = 2x -2x - 2x 0 = 0 ALWAYS TRUE!!! Infinite Solution!!

5
Algebra II

6
To solve & graph inequalities To write & solve compound inequalities

10
Less Than < Is fewer than Is less than Is at most Is no more than Is at maximum

11
Greater Than > Is more than Is larger than Is at least Is no less than Is at minimum

13
ALWAYS FLIP THE INEQUALITY SIGN WHEN YOU DIVIDE BY – #

14
FLIP!!!

15
2. -2(x + 9) + 5 < 3 -2x – 18 + 5 < 3 -2x – 13 < 3 +13 +13 -2x < 16 -2 - 2 x >-8 FLIP!!!

16
3. -2(3x + 1) > -6x + 7 -6x – 2 > - 6x + 7 +2 +2 -6x > -6x + 9 +6x +6x 0 > 9 NEVER TRUE!No Solution

17
4. 5(2x – 3) – 7x < 3x + 8 10x – 15 – 7x < 3x + 8 3x – 15 < 3x + 8 -3x -3x - 15 < 8 ALWAYS TRUE!Infinite Solutions

18
5. 4(2x – 3) > 8(x + 1) 8x – 12 > 8x + 8 -8x -8x - 12 > 8 NEVER TRUE!No Solution

19
Compound Inequality – join two inequalities with the word and or or “And” compound inequality – Find all values of the variable that make BOTH inequalities true. Need overlap “Or” compound inequality – Find all values of the variables that make at least one of the inequalities true

22
8. 5< x + 1 < 13 -1 -1 - 1 4 < x < 12 Read: x + 1 is greater than 5 AND less than 13

23
00

24
00

25
11. 16 < 5x + 1 or 3x + 9 < 6 -1 -1 -9 -9 15 < 5xor3x < -3 55 3 3 3 < x or x < -1 x > 3 or x < -1 00

26
Your friend solved the problem as shown. What was his error?

Similar presentations

© 2020 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google