Question

3)encontre raiz ou zero de cada função abaixo. A)f(x)=6x+18. B)y=-5x-10. C)y=-4x+16. D)f(x)=5x+25. E)f(x)=2x+7. F)f(x)-2x+9. G)y=-x-8. H)y=-3x+24

Answer 1

Zero da função → y = 0

f(x) = 6x + 18
6x + 18 = 0
6x = -18
x = -3

y = - 5x - 10
-5x - 10 = 0
-5x = 10
x = -2

y = -4x + 16
-4x + 16 = 0
-4x = -16
x = 4

f(x) = 5x + 25
5x + 25 = 0
5x = -25
x = -5

f(x) = 2x + 7
2x + 7 = 0
2x = -7
x = ⁻⁷/₂

f(x) = 2x + 9
2x + 9 = 0
2x = -9
x = ⁻⁹/₂

y = -3x + 24
-3x + 24 = 0
-3x = -24
x = 8