Question

Sabendo que f (x) = 2x -1, calcule o valor de F(x) e represente no plano cartesiano:

Answer 1

Resposta:

x = -3 f(x) = -7

x = -2 f(x) = -5

x = -1/2 f(x) = - 2

x = 0 f(x) = -7

x = 1/2 f(x) = 0

x = 2 f(x) = 3

x = 3 f(x) = 5

Explicação passo-a-passo:

f(x) = 2x - 1

f(-3) = 2 × (-3) - 1

f(-3) = -6 - 1

f(-3) = - 7

f(x) = 2x - 1

f(-2) = 2 × (-2) - 1

f(-2) = - 4 - 1

f(-2) = - 5

f(x) = 2x - 1

f(-1/2) = 2 × (-1/2) - 1

f(-1/2) = -1 - 1

f(-1/2) = - 2

f(x) = 2x - 1

f(0) = 2 × 0 - 1

f(0) = 0 - 1

f(0) = - 1

f(x) = 2x - 1

f(1/2) = 2 × (1/2) - 1

f(1/2) = 1 - 1

f(1/2) = 0

f(x) = 2x - 1

f(2) = 2 × 2 - 1

f(2) = 4 - 1

f(2) = 3

f(x) = 2x - 1

f(3) = 2 × 3 - 1

f(3) = 6 - 1

f(3) = 5