Solve the Problem $f ( x ) = \frac { x - B } { x - A } , f ( 4 ) = 0$

question 247

Multiple Choice

Solve the problem.
-If $f ( x ) = \frac { x - B } { x - A } , f ( 4 ) = 0$ , and $f ( 9 )$ is undefined, what are the values of $A$ and $B$ ?

• A) \(\mathrm { A } = - 4 , \mathrm {~B} = - 9\)
• B) \(\mathrm { A } = 9 , \mathrm {~B} = 4\)
• C) \(\mathrm { A } = 4 , \mathrm {~B} = 9\)
• D) \(\mathrm { A } = - 9 , \mathrm {~B} = - 4\)

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