Answer:
let me guess, chromatography?
Step-by-step explanation:
each color has its own scale in this graph. if we are to find the scale for each color, we need to observe exactly how high it goes, like a normal maths graph. blue ink is 2, red is 3, yellow is 5, green is four, and black is a sort of an added value 1, 2, 3, and 5.