Question

determinati multimea solutiilor ecuatiilor b)-x+4y+1=0

Answer 1

-x+4y+1=0

Daca ii dam lui x valoarea 0 , atunci obtinem :
0+4y+1=0
4y=0-1
4y=-1⇒y=-1/4

S={(0;-1/4)/0∈R}