A school system is reducing the amount of dumpster loads of trash removed each week. In week 5, there were 45 dumpster loads of waste removed. In week 10, there were 30 dumpster loads removed. Assume that the reduction in the amount of waste each week is linear. Write an equation in function form to show the amount of trash removed each week.

Question

anonymous · Answer

possible answers:
        f(x) = - 3x + 45
	f(x) = 3x + 45
	f(x) = - 3x + 60
	f(x) = 3x + 60

undeadknight26 · Answer

you are in FLVS or OCVS?

anonymous · Answer

FLVS

undeadknight26 · Answer

I had this question...but i forgot how to solve it...

anonymous · Answer

Oh... Okay

undeadknight26 · Answer

let me see if i can find it...

undeadknight26 · Answer

lets see you have 2 points right?

undeadknight26 · Answer

5 over 45 and 10 over 30 right?

undeadknight26 · Answer

so 
45 - 30/5 - 10

undeadknight26 · Answer

no...

anonymous · Answer

It didn't give me a graph or anything... Just the question

anonymous · Answer

Think of the data as two points on a graph, (5,45) and (10,30)

find the slope, and then use point slope form to get your equation

undeadknight26 · Answer

what he said...that means i was on the right track...i should stop doubting myself lol...

anonymous · Answer

(45-30)/(5-10)=15/-5=-3

so slope =-3

point slope form using second point (10,30)

y-30=-3(x-10)
y-30=-3x+30
y=-3x+60

anonymous · Answer

Okay so then the answer would be D?

anonymous · Answer

c

anonymous · Answer

Are you sure?

anonymous · Answer

Oh duh! The negative!