Question

dada a função f (×)= -3×+4, determine: a) f (-3) b) f (-1) c) f (0) e d) f (3)
ME AJUDEM POR FAVOR!!!

Answer 1

f(x) = - 3x + 4

a) x = - 3
f(-3) = - 3.(-3) + 4
f(-3)= 9 + 4
f(-3) = 13
y = 13

(-3; 13)

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b)  x = - 1
f(-1) = - 3.(-1) + 4
f(-1) = 3 + 4
f(-1) = 7
y = 7

(-1;7)

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c) x = 0
f(0) = - 3.0 + 4
f(0) = 0 + 4
f(0) = 4
y = 4

(0;4)
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d)  x = 3
f(3) = - 3.3 + 4
f(3) = - 9 + 4
f(3) = - 5
y = - 5

(3; - 5)

Esboço do gráfico (figura anexa)
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