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# Determinar a raiz ou zero da função y=4x+20?

raiz ou zero da funçao
Member since:
27 October 2007
Total points:
909 (Level 2)

a raiz da função é o valor de X que leva essa função ao valor de zero.
Isso acontece qd no eixo Y ela vale zero.Assim, basta substituir o Y por zero transformandoem uma igualdade fácil de resolver.
0= 4x+20
4x= -20
x= -20/4
X= - 5
A raiz da equação é -5.
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• by edson
Member since:
16 July 2006
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22,364 (Level 6)
raíz ou zeros da função é tornar a função = 0

4x + 20 = 0 . . .. isole x

x = -20 / 4 = - 5
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• by Lucas
Member since:
31 July 2006
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194 (Level 1)
-5
• Member since:
09 September 2007
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2,752 (Level 4)
Pelo chutometro deve ser Y=5
• Member since:
10 September 2007
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para determinar zero da função: y=0
4x+20=0
4x=-20
x=-5
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• Member since:
08 October 2007
Total points:
507 (Level 2)
eh isso ai -5