Question

Dada a função f(x)=4x-16,calcule:
A)f(0)
B)f(-2)
C)f(1/2)
D)f(-3/4)
E)f(x)=0
F)f(x)=7
G)f(x)=2/3

Answer 1

f(x)=4x-16

a)f(0)=4.0-16= -16

b)f(-2)=4.(-2)-16= -8-16= -24

c)f(1/2)=4.1/2-16=4/2-16=2-16=-14

d)f(-3/4)=4.(-3/4)-16= -3-16=-19

e) (4x-16)=0
4x=16
x=16/4
x=4

f)4x-16=7
4x=7+16
4x=23
x=23/4

g)4x-16=2/3
3(4x-16)=2
12x-48=2
12x=2+48
12x=50
x=50/12
x=25/6