Question

Determine a raiz ou zero das funções do 1
grau:a)1) y = -3x - 6 2)y= -5x +15 3)y = 7x 4)y=-x-1
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Answer 1

Resposta:

1)

y= -3x -6

0= -3x - 6

3x= - 6

x= - 6/3

x = - 2

2)

y=- 5x +15

0= - 5x +15

5x =15

x =15/5

x=3

3)

y=7x

7x=0

x=0

4)

y= - x -1

0= - x - 1

x= - 1