Question

calcule a raiz das seguintes funçoes do primeiro grau:
a)y=10x-50 e b)y= -4 -8x

Answer 1

a) y=10x-50
10x-50=0
10x=0+50
10x=50
x=50/10
x=5
b) y=-4-8x
-4-8x=0
-8x=0+4
-8x=4.(-1)
8x=-4
x=-4/8 (:4)
x=-1/2

Answer 2

f(x)=10x-50

10x-50=0
10x=50
X=50/10=5
X=5

b) f(x)=-4-8x

-4-8x=0
-8x=4(-1)
8x=4
X=4/8=1/2

X=1/2