Question

1. Which property justifies the following statement?

If x = 4 and y = 3x - 11, then y = 3.4-11.

Answer 1

Substitution Property of Equality

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,

`y=3\cdot 4-11`