In a direct variation function, k corresponds to the ? of the line.

In a direct variation function, k corresponds to the slope of the line.

Step-by-step explanation:

Given a direct variation function,

we have to find what k corresponds to

Let a direct variation function is the line that passes through the origin has a y-intersect of zero, b = 0

y=mx

In a direct variation the non-zero number m is called the constant of variation which represents the slope of the line.

Hence, in a direct variation function, k corresponds to the slope of the line.

from the figure we get,

the x axis shows   the months and,

the y-axis shows the number of satisfied customer.

each line or each cell in upward direction (y-axis) shows 500.

the appropriate scale for the y - axis is: -

a = 2000 customers

b = 4000 customers

c = 6000 customers

d = 8000 customers

e = 10000 customers

f = 12000 customers

g = 14000 customers