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## Operations and Algebraic Thinking 218-221

### Course: Operations and Algebraic Thinking 218-221>Unit 5

Lesson 7: Intro to inequalities with variables

# Inequalities word problems

Learn how to write inequalities to model real-world situations.

## Want to join the conversation?

• How about if you have a problem like this? :

Describe the numbers x and y such that if x>y, then x^2=y^2

I tried to write an equation like this:

x>y=y^2

This is as close as I have gotten so far. If someone could explain the procedures to do this problem, that would be greatly appreciated! Thank you! :)
• x=-y should be the answer. For example, if x is 2 and y is -2, x^2=y^2=4. Hope this helps.
• can the variable be on either side and if not how does that change it?
• The variable can start out on one or both sides. When you finish solving, the variable will be on one side. It does not matter which side. For example: x>3 is the same as 3<x

Hope this helps.
• 60 + 9 = 69 right?
• Correct. DINGGGGG
You win!
(1 vote)
• is 4 + 20 420?
• No, 4+20=24
420= 400+20
• Why is this so hard?
• Because it´s math🫥
• What are ways to check inequalites
• Can you explain what you mean by "Checking" inequalities? Do you want to compare them?
• I dont know how to do the inequality test it is hard for me I cant do the plotting nor the graphic