Question

Name the property of equality that justifies: If x=3 and y=x+5 then y=8
A. Addition Property of Equality
B. Distributive Propery of Equality
C. Substitution Property of Equality
D. Reflexive Property of Equality

Answer 1

If you replace x in the second equation with 3, does it make the statement true?

Answer 2

yes

Answer 3

Then you could 'substitute' x with 3, right?

Answer 4

yes

Answer 5

so it would b C

Answer 6

Name the property of equality that justifies: Ifm<ABC=m<XYZ, then 5*m<ABC=5*m<XYZ
A. Addition Property of Equality
B. Subtraction Property of Equality
C. Multiplication Property of Equality
D. Division Property of Equality