Question

Dada à função F(x)=1 -5×. Determine:
F(0)
F(-1)
F(1/5)
F(-1/5)

Answer 1

f(x) = 1 - 5x

f(0)
___
f(x) = 1 - 5x
f(0) = 1 - 5 (0)
f(0) = 1 - 0
f(0) = 1

f(-1)
___
f(x) = 1 - 5x
f(-1) = 1 - 5(-1)
f(-1) = 1 - (-5)
f(-1) = 1 + 5
f(-1) = 6

f(1/5)
_____
f(x) =1 - 5x
f(1/5) = 1 - 5(1/5)
f(1/5) = 1 -(5/5)
f(1/5) = 1- 1
f(1/5) = 0

f(-1/5)
_____
f(x) = 1 - 5 x
f(-1/5) = 1 - 5(-1/5)
f(-1/5) = 1 - (-5/5)
f(-1/5) = 1 - (-1)
f(-1/5) = 1 +1
f(-1/5) = 2