What property is demonstrated by the following?

y = 3x + 7 and x = 3
y = 3 • 3 + 7

A.reflexive property
B.symmetry
C.transitive property
D.substitution

3 answers

3 was substituted for x.
Thank you so is the property Subtitution?
I would say so. Reflexive and Transitive apply to verbs, but I have never heard them applied to math.

There is no symmetry in the equation.

A process (substitution) is not a property.

You seem to be taking a rather nontraditional course in math. I believe that is rather a shame, and that useful math skills may not be learned effectively... only a lot of "buzz" words. Good luck.