Answer:
(1st picture): y=2x+3 and y=x+5
(2nd picture): y=4x+2 and y =3x+2
(3rd picture): y=2x+1 and y =x+2
(4th picture): 3x and x+3
That’s riptide by Vance joy
I would say The illuminated manuscripts because it captures the style of secular medieval art.
