Question

determine as raizes das seguintes funções
a) y=2-x/2
b) y=x/3-2
c)y=x/2-3/4

Answer 1

a) y=2 - x => 2 - x = 0 => 4- x = 0 ==> x = 4
             2            2
===========================================
b) y= x - 2 => x - 2 = 0 ==> x - 6 = 0 ==> x = 6
         3           3
=============================================
c)y = x - 3 => x - 3 = 0 => 2x - 3 = 0 => 2x = 3 ==> x = 3/2
         2   4      2   4