The graph shows the cost of a lunch in a school’s cafeteria since school started. A graph titled Cost of a


The graph shows the cost of a lunch in a school’s cafeteria since school started.
A graph titled Cost of a Lunch in a School’s Cafeteria has Days since school started on the x-axis and cost of lunch (dollars) on the y-axis. A horizontal line is at y = 2.5.
Which is correct about the graph’s slope?
Its slope is positive.
Its slope is negative.
Its slope is zero.
It has no slope.


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