1.4 Properties of Equality

Identify the property you would use to solve this equation:
4x = 72

• Addition Property of Equality
• Subtraction Property of Equality
• Multiplication Property of Equality
• Division Property of Equality

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CCSS.HSA.REI.A.1

Identify the property you would use to solve this equation:

y – 7 = 28

• Addition Property of Equality

• Subtraction Property of Equality

• Multiplicative Property of Equality

• Division Property of Equality

If y/4 = 5, then y = 20

• Multiplication Property of Equality
• Division Property of Equality
• Addition Property of Equality
• Subtraction Property of Equality

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CCSS.HSA.REI.A.1

The reflexive property means that for all a, a = a.

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The symmetric property means that if a = b then b = a.

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The transitive property means if a = b and b = c, then a = c.

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The substitution property means you can replace a part of a statement with an equivalent value.

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Which property of real numbers was used to get from Step 3 to Step 4?

• Addition Property of Equality

• Subtraction Property of Equality

• Symmetric Property

• Substitution Property

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CCSS.HSA.REI.A.1

Name the property of equality that the statement illustrates.

If ∠A≅∠B and ∠B≅∠C, then ∠A≅∠C

• Reflexive Property of Congruence

• Transitive Property of Congruence

• Definition of Congruence

• Symmetric Property of Congruence

Name the property of equality that the statement illustrates.

If m = n, then n = m

• Symmetric Property of Equality

• Definition of Congruence

• Reflexive Property of Equality

• Substitution Property of Equality