John wants to rent movies over his school vacation. The cost for the movie rental is $4.50 per movie. John starts out with $20. Write an equation for the amount of money, y, John will have after x amount of movie rentals.
Answer

y = 20 - 4.50x

y = 4.50x - 20

y = 20 + 4.50x

y = 4.50x

Question

John wants to rent movies over his school vacation. The cost for the movie rental is $4.50 per movie. John starts out with $20. Write an equation for the amount of money, y, John will have after x amount of movie rentals.
Answer
		
y = 20 - 4.50x
		
y = 4.50x - 20
		
y = 20 + 4.50x
		
y = 4.50x

anonymous · Answer

cost for movie is -4.5
starts at 20 

yint=20, m=-4.5
 
y=mx+b

y=-4.5x+20