I don't see any description.
However, the exponential function is defined for any value of the argument; on the other hand, since you have 1/x, zero is excluded. The function is defined for any value other than zero.
The domain and range are both [-6, +6].
domain is set of real numbers range is set of real numbers
The domain and range of the equation y = 2x+8 are both [-infinity,+infinity].
5
It's an equation. It would be a function if the domain, codomain, and dependence were defined.
As many solutions as there are points in the domain.
Since your expression is a linear equation your domain would be all real numbers. This means all of the units on the x-axis.
The range is {-5, -2, 1, 4}
The answer depends on the domain for x. For example, if the domain is x = 7, then the range is 55. If the domain is all Real numbers, then the range is y >= 6.
If the domain is the set of real numbers, so is the range.
The domain is related to the range depending on the equation or equations given. Without this context, the domain for a Cartegian plane (2 dimensions) is simply R, or all real numbers. With a linear equation (absolute value/ dependent variation) a more useful and specific answer can be given.
Y = x squared -4x plus 3 is an equation of a function. It is neither called a domain nor a range.