Question

qual a raiz das funções abaixo
a)y=5x-15
b)y=2x+24
c)y=5x+25
d)y=-2x+4
me ajuda ​

Answer 1

a)y=5x-15

5x-15=0 => 5x=15 => x=3 ✓

b)y=2x+24

2x+24=0 => 2x= -24 => x= -24/2 => x=-12

c)y=5x+25

5x+25=0 => 5x=-25 => x=-25/5 => x=-5

d)y=-2x+4

2x+4=0 => 2x= -4 => x= -2