Question

What restrictions may be necessary to the domain and range of linear equations?

Answer 1

@AlexandervonHumboldt2

Answer 2

The parent function for a linear function is y=x, and the domain and range is all real number. Depending on the equation there can be restrictions on equations like y=3x+6, it couldn't go through (-25,20) because it isn't going that direction, and because it's linear it doesn't curve,

Answer 3

the domain restricts values of x and range restricts values of y
as casey said, some functions cannot take certain values

Answer 4

In general, linear functions do not have restrictions on their domains or ranges. I do regard vertical lines (such as x=4) and horizontal lines (such as y=2) to be exceptions. The domain of x=4 has only ONE possible value (what is it?), and the range of y=2 has only one possible value (what is it?).