Respuesta :

3x + 4y = 10
4y = -3x + 10
y = -3/4x + 5/2
or
 
f(x) = -3/4x + 5/2

answer: C) f(x) = - 3/4 x + 5/2 

the answer is
f(x) = −3/4 x + 5/2