Question

Michaela wrote the following. If p + 9 = 25 and p = q, then q + 9 = 25. Which property did Michaela show?

A) symmetric property of equality

B) multiplication property of equality

C) substitution property of equality

D) reflexive property of equality

Answer 1

substitution property of equality

Explanation:

took it on edge

Answer 2

The correct option is C.

Explanation:

The given equation is

`p+9=25` .... (1)

and

`p=q` ...(2)

According to the substitution property of equality, if we have two equation then we can substitute the values form one equation to another equation.

Equation 2 represent that the value p and q are equal.

Using substitution property of equality the first equation can be written as

`q+9=25`
`[\because p=q]`

Therefore Michaela use substitution property of equality and option C is correct.