Question

Calcule a raiz das funções
a) y=2x+10
b) y=4x+16

Answer 1

a-
y= 2x+10
2x+10=0
2x= -10
x= $\frac{-10}{2}$
x= -5

b- 
y=4x+16
4x+16=0
4x= -16
x= $\frac{-16}{4}$
x= -4