Question

find the range of each of the following functions
f(x)=2-3x,x belongs to R,x less then 0

Answer 1

to calculate the range put the domain I.e. value of x,and calculate which values are attain by function.
or
$y = f(x) \\ y = 2 - 3x \\ - 3x = y - 2 \\ 3x = 2 - y \\ x = \frac{2 - y}{3}$
now check the values of y for which function is defined for real values.so range is R.

Answer 2

Step-by-step explanation:

y=f(X)

y=2-3x

-3x=2-y

X=2-y/3

so the range is R.