Question

Dada a função f(x)=6x-7,calcule a) f(0) b)f(7) c)f(8) d)f(×)=0 e)f(×) =17 f)f(×)=35

Answer 1

f(x)= 6x-7

a) f(0)= 6.0-7= -7

b)f(7)= 6.7-7=42-7=35

c)f(8)=6.8-7=48-7=41

d) 6x-7=0
6x=7
x=7/6

e) 6x-7=17
6x=17+7
6x=24
x=24/6
x=4

f) 6x-7= 35

6x=35+7

6x=42

x=42/6


x=7