HG_2.6.1 Video Lesson - Intro to Proofs

What is the first thing you should review before starting two-column proofs?

• Scientific formulas

• Algebraic properties

• Geometry diagrams

• Historical dates

In a two-column proof, what do the left and right sides represent?

• Left: Diagram, Right: Explanation

• Left: Question, Right: Answer

• Left: Statement, Right: Reason

• Left: Problem, Right: Solution

What is usually the first reason in a two-column proof?

• The conclusion

• The hypothesis

• The final answer

• Given

What property is used when you add the same number to both sides of an equation?

• Addition property of equality

• Division property of equality

• Subtraction property of equality

• Multiplication property of equality

Tags

CCSS.HSA.REI.A.1

Why can you divide both sides of an equation by the same number?

• Because of the division property of equality

• Because of the addition property of equality

• Because of the subtraction property of equality

• Because of the multiplication property of equality

Tags

CCSS.HSA.REI.A.1

What is the Multiplication property of equality?

• If x = y, then x × z = y × z

• If x = y, then x + z = y + z

• If x = y, then x - z = y - z

• If x = y, then x ÷ z = y ÷ z

Tags

CCSS.HSA.REI.A.1

What is the purpose of a 2-column proof in algebra?

• To show logical steps and reasons for solving equations

• To memorize equations

• To draw graphs

• To list vocabulary words

What is the first step in solving the equation X - 11 = -35?

• Divide both sides by 11

• Subtract 11 from both sides

• Add 11 to both sides

• Multiply both sides by 11

Tags

CCSS.6.EE.B.7

In the equation 2P - 29 = -10P - 17, what is the first step to isolate P?

• Add 10P to both sides

• Divide both sides by 10P

• Multiply both sides by 10P

• Subtract 10P from both sides

What property is applied when subtracting both sides of an equation by the same number?

• Addition property of equality

• Multiplication property of equality

• Division property of equality

• Subtraction property of equality

Tags

CCSS.HSA.REI.A.1