Respuesta :

[tex]y=3x+1\\\\(1;\ y)\\\\subtitute\ x=1\ to\ the\ equation:\\\\y=3\cdot1+1\\\\y=3+1\\\\y=4\\\\\boxed{(1;\ 4)}[/tex]
y = 3x + 2,   (1, )    x = 1, other coordinate y.

y = 3*1 + 2 = 3 + 2 = 5

Coordinate (1, ) =    (1 , 5)