Question 31293
if customers per day are y and rate is $ x ,then we are given that y=1000 when x=2						
for every 0.25 increase in x from $ 2 there is a loss of 50 customers ..that is a negative rate of 50/0.25=-200.						
so eqn.is y=1000-200(x-2)..which is a linear eqn.representing a straight line						
points for plotting graph are 						
x	2	3	4	5	6	7
y	1000	800	600	400	200	0

take a suitable scale of say 1 $ = 1 cm. or so on x axis and 200 customers = 1 cm. on y axis  on a graph paper, 						
plot the above points and join them by a straight line.don’t draw the line below x=2 and above x=7.	
					
{{{ graph( 800, 800, -2, 8,-1, 1500, 1000-200*(x-2)) }}}