i need this ASAP:
assume that the sales of a certain appliance dealer are approximated by a linear function.. suppose that sales were $13,500, in 1982 and $52,500 in 1987. let x=0 represent 1982. find the equation giving yearly sales S(x).

Question

i need this ASAP:
assume that the sales of a certain appliance dealer are approximated by a linear function.. suppose that sales were $13,500, in 1982 and $52,500 in 1987. let x=0 represent 1982. find the equation giving yearly sales S(x).

anonymous · Answer

@thushananth01

anonymous · Answer

anyone?? :\

campbell_st · Answer

find the slope of the line between (0, 13500) and (5, 52500) 

the y intercept occurs when x = 0

so you'll be able to put the line in the form y = mx + b

anonymous · Answer

$$S(x)=7800~~?$$

campbell_st · Answer

ummm nope thats no my answer... what slope did you get

campbell_st · Answer

thats the slope... but whats the equation...

anonymous · Answer

$${52500-13500\over5-0}~~~~~=7800$$

anonymous · Answer

y=7800x+0

anonymous · Answer

y(0) =13500

anonymous · Answer

y=S(x) and b=0

S(x)=7800x ?

campbell_st · Answer

nope you need the y-intercept....

anonymous · Answer

when x = 0 y= 13500

campbell_st · Answer

but thats a good start

anonymous · Answer

52500=7800(5)+b
52500=3900+b
b=48600

y=7800x+48600

campbell_st · Answer

ummm I think you're missing a zero on the right hand side...

campbell_st · Answer

the equation is S(x) = 7800x + 13500

anonymous · Answer

oh right sorry
its S(x)=7800x+13500

campbell_st · Answer

b is the y intercept... and occurs when x = 0

campbell_st · Answer

good job

anonymous · Answer

thanks...i have another question...help please