1- De acordo com as funções abaixo, organize uma tabela, forme as coordenadas do ponto e construa o gráfico para cada uma das funções.
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Soluções para a tarefa
Explicação passo-a-passo:
y = -4x²
f(-2) = -4.(-2)² = -4.4 = -16 (-2, -16)
f(-1) = -4.(-1)² = -4 (-1, -4)
f(0) = -4.(0)² = 0 (0, 0)
f(1) = -4.(1)² = -4 (1, -4)
f(2) = -4.(2)² = -16 (2, -16)
y = x² - 3x
f(-2) = 1.(-2)² - 3. (-2) + 0 = 1.4 + 6 = 10 (-2, 10)
f(-1) = 1.(-1)² - 3. (-1) + 0 = 1.1 + 3 = 4 (-1, 4)
f(0) = 1.(0)² - 3.0 + 0 = 1.0 = 0 (0, 0)
f(1) = 1.(1)² - 3.1 + 0 = 1.1 - 3 = -2 (1, -2)
f(2) = 1.(2)² - 3.2 + 0 = 1.4 - 6 = -2 (2, -2)
f(3) = 1.(3)² - 3.3 + 0 = 1.9 - 9 = 0 (3, 0)
f(4) = 1.(4)² - 3.4 + 0 = 1.16 - 12 = 4 (4, 4)
f(5) = 1.(5)² - 3.5 + 0 = 1.25 - 15 = 10 (5, 10)
y = x - 1
f(-3) = 1. (-3) - 1 = - 3 - 1 = -4 (-3, -4)
f(-2) = 1. (-2) - 1 = - 2 - 1 = -3 (-2, -3)
f(-1) = 1. (-1) - 1 = - 1 - 1 = -2 (-1, -2)
f(0) = 1.0 - 1 = + 0 - 1 = -1 (0, -1)
f(1) = 1.1 - 1 = + 1 - 1 = 0 (1, 0)
f(2) = 1.2 - 1 = + 2 - 1 = 1 (2, 1)
f(3) = 1.3 - 1 = + 3 - 1 = 2 (3, 2)
f(4) = 1.4 - 1 = + 4 - 1 = 3 (4, 3)
y = -x + 3
f(-2) = - 1. (-2) + 3 = + 2 + 3 = 5 (-2, 5)
f(-1) = - 1. (-1) + 3 = + 1 + 3 = 4 (-1, 4)
f(0) = - 1.0 + 3 = + 0 + 3 = 3 (0, 3)
f(1) = - 1.1 + 3 = - 1 + 3 = 2 (1, 2)
f(2) = - 1.2 + 3 = - 2 + 3 = 1 (2, 1)
f(3) = - 1.3 + 3 = - 3 + 3 = 0 (3, 0)
f(4) = - 1.4 + 3 = - 4 + 3 = -1 (4, -1)
f(5) = - 1.5 + 3 = - 5 + 3 = -2 (5, -2)
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