Question

) Se (2; 3; x; ...) e (8; y; 4; ...) forem duas sucessões de números diretamente proporcionais, então:
a) x = 1 e y = 6
b) x = 2 e y = 12
c) x = 1 e y = 12
d) x = 4 e y = 2
e) x = 8 e y = 12

Answer 1

$Resolu\c{c}\~ao \to \left\{\begin{array}{ccc}(2;3;x;...)\ ^{DP} \to(8;y;4;...) \\\\\frac{2}{8} = \frac{3}{y}\\\\2x = 24\\\\\boxed{\boxed{x = 12}}\\\\\\\frac{3}{y} = \frac{x}{4}\\\\x*y = 12\\\\12y = 12\\\\\boxed{\boxed{y = 1}}\end{array}\right \to \left\{\begin{array}{ccc}Letra\ C\\\end{array}\right\}$

Espero ter ajudado. =^.^=