In the given two variable, if we put the value of x, then we get the corresponding value of yif value of x=0 then⇒y=3×0+5⇒y=5if value of x=1 then⇒y=3×1+5⇒y=8if value of x=2 then⇒y=3×2+5⇒y=11if value of x=−1 then⇒y=3×−1+5⇒y=2Hence, all these pairs (0,5),(1,8),(2,11),(−1,2)  are the solution for the given pair of equationHence, the given equation had infinitely many solutions.