Respuesta :

The answer is:  "- 4 " .
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     " f(x) = - 4 " .
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Explanation:
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Given:  " f(x) = 1 – 5x " ;  Find:  " f(1) " ; 

Substitute "1" for values of "x" ;

 f(1) = 1 – 5(1)  = 1 – 5 = - 4 .

The answer is:  "- 4 " .
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     " f(x) = - 4 " .
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