The graph shows the amount of money Hachi earns at his job in relation to the number of hours he works. Hachi does not earn any money if he does not work.
What is a function?
A function is defined as a relation between the set of inputs having exactly one output each.
We can see that the graph linearly increases as the hour he worked and the money he earned will increase.
we know that the graphed point is (0,0),
He earned 10 money per hour of work.
so it is self-explanatory that he works 0 hours and obviously, he won't earn any money if he doesn't work.
Thus, Hachi does not earn any money if he does not work.
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