Question

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

Answer 1

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