Sea la función: f(x) = px + 2, si f(– 4) = 8, entonces el valor de p =?
A) – 14
B) – 2
C) – 1,5
D) 1,5
E) 14
A) – 14
B) – 2
C) – 1,5
D) 1,5
E) 14
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Respuesta:
[tex]p \times ( - 4) + 2 = 8 \\ - 4p + 2 = 8 \\ - 4p = 8 - 2 \\ - 4p = 6 \\ p = 6 \div ( - 4) \\ p = - 1.5[/tex]