What do the domain and range of a function compare to in a linear equation?

2 answers

I do not know what the question means.
for the general case where
y = m x + b
the domain is all real x, (from -oo to +00)
and the range is all real y.
Now if you have a special case, like m = 0 (horizontal) or x = constant (vertical, well then those are special cases.
I want to say what Damon said in a different way.

In the y-intercept equation y = mx + b (an equation that represents linear functions), the domain is ALL REAL NUMBERS going from negative infinity to positive infinity; the range is also ALL REAL NUMBERS y.

Is this what you sought?