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Give a Rule for the Piecewise-Defined Function f(x)={x−3 if x≠3−2 if x=3;f ( x ) = \left\{ \begin{array} { l l } x - 3 & \text { if } x \neq 3 \\ - 2 & \text { if } x = 3 \end{array} ; \right.

Question 439

Multiple Choice

Give a rule for the piecewise-defined function. Then give the domain and range.
- Give a rule for the piecewise-defined function. Then give the domain and range. -  A)   f ( x )  = \left\{ \begin{array} { l l } x - 3 & \text { if } x \neq 3 \\ - 2 & \text { if } x = 3 \end{array} ; \right.  Domain:  ( \infty , \infty )  , Range:  ( \infty , 3 ] \cup [ 3 , \infty )   B)   f ( x )  = \left\{ \begin{array} { l l } 2 x - 3 & \text { if } x \neq 3 \\ - 3 & \text { if } x = 3 \end{array} ; \right.  Domain:  ( \infty , 3 ] \cup [ 3 , \infty )  , Range:  ( \infty , \infty )   C)   f ( x )  = \left\{ \begin{array} { l } 2 x - 3 \text { if } x < 3 \\ 2 x + 3 \text { if } x \geq 3 \end{array} ; \right.  Domain:  ( \infty , 3 )  \cup ( 3 , \infty )  , Range:  ( \infty , \infty )   D)   f ( x )  = \left\{ \begin{array} { l l } 2 x - 3 & \text { if } x \neq 3 \\ - 2 & \text { if } x = 3 \end{array} \right. ; Domain:  ( \infty , \infty )  , Range:  ( \infty , 3 )  \cup ( 3 , \infty )


A) f(x) ={x−3 if x≠3−2 if x=3;f ( x ) = \left\{ \begin{array} { l l } x - 3 & \text { if } x \neq 3 \\ - 2 & \text { if } x = 3 \end{array} ; \right. Domain: (∞,∞) ( \infty , \infty ) , Range: (∞,3]∪[3,∞) ( \infty , 3 ] \cup [ 3 , \infty )
B) f(x) ={2x−3 if x≠3−3 if x=3;f ( x ) = \left\{ \begin{array} { l l } 2 x - 3 & \text { if } x \neq 3 \\ - 3 & \text { if } x = 3 \end{array} ; \right. Domain: (∞,3]∪[3,∞) ( \infty , 3 ] \cup [ 3 , \infty ) , Range: (∞,∞) ( \infty , \infty )
C) f(x) ={2x−3 if x<32x+3 if x≥3;f ( x ) = \left\{ \begin{array} { l } 2 x - 3 \text { if } x < 3 \\ 2 x + 3 \text { if } x \geq 3 \end{array} ; \right. Domain: (∞,3) ∪(3,∞) ( \infty , 3 ) \cup ( 3 , \infty ) , Range: (∞,∞) ( \infty , \infty )
D) f(x) ={2x−3 if x≠3−2 if x=3f ( x ) = \left\{ \begin{array} { l l } 2 x - 3 & \text { if } x \neq 3 \\ - 2 & \text { if } x = 3 \end{array} \right. ; Domain: (∞,∞) ( \infty , \infty ) , Range: (∞,3) ∪(3,∞) ( \infty , 3 ) \cup ( 3 , \infty )

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