Question

1.Qual a raiz das funções do 1° grau : a) y = 7x – 7 b) y = 10x + 100 c) y = 2x - 64 d) y = 5x - 45 e) y = 3x + 300

Answer 1

Explicação passo-a-passo:

a)

7x - 7 = 0

7x = 7

x = 7/7

x = 1

b)

10x + 100 = 0

10x = -100

x = -100/10

x = -10

c)

2x - 64 = 0

2x = 64

x = 64/2

x = 32

d)

5x - 45 = 0

5x = 45

x = 45/5

x = 9

e)

3x + 300 = 0

3x = -300

x = -300/3

x = -100