Question

dada a função f(x)=2x-6calcule
a)f(15) b) f(5) c)[f(15)-f(5)]/15-5

Answer 1

a) f(15) = 2 · 15 -6
f(15) = 24

b) f(5) = 2 · 5 -6
f(5) = 4

c) $\frac{24 - 4}{15 - 5}$ =
$\frac{20}{10}$ =
2