Answer:
addition property of equality
Step-by-step explanation:
The equation y – 9 + 9 = –17 + 9 is an example of which property
A.Substitution Property of Equality:
In this property we substitute some particular value for the variable.
B.Addition Property of Equality
This property states that when we add any number to one sides of the equation we do the same on the other side
y – 9 + 9 = –17 + 9
In the equation , 9 is added on both sides of the equation. So it is an example of addition property of equality
C.Reflexive Property of Equality
Reflexive property states that the number is equal to itself
D. Symmetric Property of Equality
It states that if a=b then b=a
