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The table shows the amount of money a plumber charges for different numbers of hours that he works. The plumber graphed this information.

What is the slope of the line that represents this situation?

Hours worked| 2 4 7 9
Amount charged ($)| 96 192 336 432

Sagot :

y=ax+b
A=y/x
= 192-96/4-2
= 96/2
=48
So y=48x+b
Lets replace y and x
96=48.2+b
B= 96-96
=0
So y=48x
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