Question

y=-x²+4x-3,descubra o valor de y:?
X= 0
X=1
X= 2
X= 3
X= 4

Answer 1

x = 0
y = - x² + 4x - 3
y = 0 + 4.0 - 3
y = 0 + 0 - 3
y = - 3
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x = 1
y = - x² + 4x - 3
y = - 1² + 4.1 - 3
y = - 1 + 4 - 3
y = - 1 + 1
y = 0
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x = 2

y = - (2)² + 4.2 - 3
y = - 4 + 8 - 3
y = - 4 + 5
y = 1
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y = - x² + 4x - 3
x = 3

y = - 3² + 4.3 - 3
y = - 9 + 12 - 3
y = - 9 - 3 + 12
y = - 12 + 12
y = 0
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y = - x² + 4x - 3
x = 4

y = - 4² + 4.4 - 3
y = - 16 + 16 - 3
y = 0 - 3
y = - 3
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