Question

dada a função do 1°grau F(x)=2x-5 determinar:
a f(2)
b f(3)
c f(4)
d f(-2)
e f(13)
f f(5)
g f(8)

Answer 1

a)
f(2) = 2 * 2 - 5 = 4 - 5 = -1

b)
f(3) = 2 * 3 - 5 = 6 - 5 = 1

c)
f(4) = 2 * 4 - 5 = 8 - 5 = 3

d)
f(-2) = 2 * (-2) - 5 = -4 - 5 = -9

e)
f(13) = 2 * 13 - 5 = 26 - 5 = 21

f)
f(5) = 2 * 5 - 5 = 10 - 5 = 5

g)
f(8) = 2 * 8 - 5 = 16 - 5 = 11