Função do primeiro grau:
f(x) = 3x + 7
a) f(0) = 3.0 + 7
f(0) = 0 + 7
f(0) = 7
b) f(1) = 3.1 + 7
f(1) = 3 + 7
f(1) = 10
c) f(2) = 3.2+ 7
f(2) = 6 + 7
f(2) = 13
d) f(3) = 3.3 + 7
f(3) = 9 + 7
f(3) = 16
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a) f(x) = 2x² - 2
f(0) = 2.0² - 2
f(0) = 2.0 - 2
f(0) = 0 - 2
f(0) = -2
b) f(1) = 2.1² - 2
f(1) = 2.1² - 2
f(1) = 2 - 2
f(1) = 0
c) f(2) = 2.2² - 2
f(2) =- 2.4 - 2
f(2) = 8 - 2
f(2) = 6
d) f(-1) = 2.(-1)² - 2
f(=-1) = 2.1 - 2
f(-1) = 2 - 2
f(-1) = 0
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