42 Given the following function find f 4 f 0 and f1 fx 4x 2

#42

Given the following function, find f( -4), f (0), and f(1).

f(x) = 4x -2

given function is

f(x) = 4x-2

(i) f(-4)

substitiute x= - 4 in the function f(x)

we get

f(-4)= 4(-4)-2= -16-2 = -18

(ii) f(0)

substitiute x= 0 in the function f(x)

we get

f(0)= 4(0)-2 = 0-2 = -2

(iii) f(1)

substitiute x= 4 in the function f(x)

we get

f(1)= 4(1)-2= 4-2= 2

therefore

for the given functio f(x)= 4x-2

f(-4) = -18,

f(0)= 0 and

f(1) = 2