The value of y for the given equation at x=81 is 87.
Equations are mathematical statements containing two algebraic expressions on both sides of an 'equal to (=)' sign.
Here, given equation;
y = x + 6
Put x = 81, we get
y = 81 + 6
y = 87
Thus, the value of y for the given equation at x=81 is 87.
Learn more about Equations from:
https://brainly.com/question/2263981
#SPJ1