Question

How do you find the domain and range for `f(x)=2x+4`?

Answer 1

Domain: `(-oo, +oo)`
Range: `(-oo, +oo)`

Explanation:

#f(x) is a straight line of slope +2 and y-intercept +4

`f(x)` is defined `forall x in RR ->` Domain = `(-oo, +oo)`

`f(x)` has no upper or lower bounds `->` Range = `(-oo, +oo)`