Question

determine os zeros das seguintes funçôes do 1º grau

a)y=2x-4
b)y=-4x-8
c)y=5x-1
d)y=2x-10

Answer 1

a) 2x-4 = y -> 2x = 4 -> x = 2
b) -4x-8 = y -> -4x = 8 -> x = -2
c) 5x-1 = y -> 5x = 1 -> x = 1/5
d) 2x-10 = y -> 2x = 10 -> x = 5