All equations for which the greatest power of its variable is 1, and that have no absolute value signs surrounding the variable, is linear. Therefore, yes, your problem is linear.
A linear equation has no higher powers than 1. This is linear.
No, y=x-2 is linear.
-1
It is linear because you're just adding numbers. There are no exponents.
This is non-linear
A linear equation has no higher powers than 1. This is linear.
-1
Give us the whole equation, and we can help.
linear (A+)
No, y=x-2 is linear.
-1
It is linear because you're just adding numbers. There are no exponents.
This equation is linear, because neither variable symbol occurs to any power except the first.
7
It is linear.
This is non-linear
Generally, both types of equation contain an equals sign and some combination of numbers and/or variables. That is the only thing I can think of that is common between all types of nonlinear and linear equations.