Answer:
Substitution Property of Equality
Step-by-step explanation:
The substitution property of equality states that if x = y, then x can be substituted in for y in any equation, and y can be substituted for x in any equation.
In your case,
if x = 4 and y = 3x - 11, then by Substitution Property of Equality,
[tex]y=3\cdot 4-11[/tex]