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7th Math Unit 3 Day 12 - 2/9

Last updated over 1 year ago
15 questions
Objective and Summary:
SWBAT justify sign rules land interpret solutions to inequalities
CFS:
#1: Accurately solves inequality with inverse operations
#2: Accurately interprets solutions
1

Solve--Use inverse operations to solve the inequality (get the variable by itself).

x+3>15

List out three solutions to the inequality.

1

Reverse??--Start with the given inequality, then divide both sides by -2.
Type out your new inequality.

-10<6

1

Solve 2--Solve the given inequality. Type your solution set to the inequality.

Ex) x > 4

-\frac{1}{3}x>7

1

Solve--Use inverse operations to solve the inequality (get the variable by itself like we do for equations).

x-7<18

List out three solutions to the inequality.

1

Negatives again--Use inverse operations to solve the inequality (get the variable by itself).

-4x>24

List out three solutions to the inequality.

1

True or False?--Is 7 a solution to the inequality x≤-9 ? Explain why or why not.

"I think 7 (is / is not) a solution because..."

1

SPICY-

Solve the two-step inequality.

7x+3>45

List out three possible values of x.

1

Solve the inequality
–2x + 5 < 13

1

Solve the inequality
3x + 4 > –11

1

Solve the inequality
–4x + 7 < 27

1

Solve the inequality
5x – 3 > 22

1

Solve the inequality
–2x + 9 < 19

1

Solve the inequality
3x – 6 > –15

4

Preserved or Reversed?--Solve the inequality.

-9x<90

List out 3 possible solutions.

CFS:
#1: Accurately solves inequality with inverse operations
#2: Accurately interprets solutions

2

Read and analyze the problem and solution.
2x + 5 < 55

Step 1: Subtract 5 from both sides 2x < 50
Step 2: Divide both sides by 2. x < 20

Is the solution x < 20 Correct? Explain why or why not. If not, find the accurate solution.