rate of change is m in y=mx+b
also, starting value=when x=0
since so many questions I will not show work
1. A positive
2.B negatvie
3.B negative
4.B negative
2. B y=5x+4
3. B y=7x-8
4. C 12x+6y=30
5. plumber=140
electrition=115
per our means how much does he charge for 1 hour so subsitute 1 for x or find where 1 is
