Give the domain and range of the relation.
-Find $f ( - 3 )$ when $f ( x ) = 3 x - 1$
A) 2
B) $- 10$
C) $- 6$
D) $- 8$

Question

Quizplus · Accepted Answer

The domain of $f(x) = 3x - 1$ is all real numbers, since there are no restrictions on the values that $x$ can take. The range is also all real numbers because as $x$ varies over all real numbers, $3x - 1$ can take any real value. To find $f(-3)$, substitute $-3$ for $x$ in the equation: $f(-3) = 3(-3) - 1 = -9 - 1 = -10$.

Give the Domain and Range of the Relation f(−3)f ( - 3 )f(−3)

Give the Domain and Range of the Relation $f ( - 3 )$