Which relationship could be the one shown on the graph?

Jackson paid $4.50 for 6 notebooks, where x is the number of notebooks and y is the total price.
Jackson read 2 pages in 1.5 minutes, where x is the time in minutes and y is the number of pages.
Jackson ate 8 chips containing 6 calories each, where x is the number of chips and y is the number of calories per chip.
Jackson spent 6 minutes working on 7.5 math problems, where x is the number of math problems and y is the time in minutes.
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