Write an equation for the amount, a, that Maria makes as a function of the number of hours, h, that she babysits. Keep in mind that Maria will make $0 for babysitting for 0 hours.

a = mh

where m is the rate of income of Maria by babysitting per hour.

Step-by-step explanation:

Let the amount that Maria makes is $a for babysitting for h hours.

If the rate of income i.e. slope of the graph obtained from plotting the number of hours along the x-axis and her earning in dollars along the y-axis will be given by  

{Since Maria will make $0 for babysitting for 0 hours}

⇒ a = mh

where m is the rate of income of Maria by babysitting per hour. (Answer)

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