vitoroliveirahoffman vitoroliveirahoffman
  • 26-03-2021
  • Mathematics
contestada

A partir dos valores a seguir, determine a lei da função.

A partir dos valores a seguir determine a lei da função class=

Respuesta :

ayoung88
ayoung88 ayoung88
  • 26-03-2021

Answer:

Ela segue esse modelo

f(x) = ax + b

Então, é só substituir os valores de x e de y na Lei de Formação

Ex: quando x=0, y=-1

y= ax+b

-1=a.0+b

b= -1

È onde a reta toca o eixo y, porque x=0

Agora, vamos usar outro par ordenado.

Quando x=2, y=3

3=a.2+(-1)

3=2a-1

3+1=2a

4=2a

a=4/2

a=2

A lei de formação é essa

a= 2; b=-1

f(x)= ax+b

f(x)=2x-1

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