Please helpp it would mean a lottt:)

(-8,-2)

Step-by-step explanation:

x=2y-4 (equation 1)

7x+5y=-66 (equation2)

Substitute equation 1 in 2

7(2y-4)+5y=-66

14y-28+5y=-66

19y= -66+28

19y= -38

y= -38/19

—>y=-2

Now substitute y=-2 in equation 1

x=2y-4

x=2(-2)-4

x=-4-4

—> x=-8

==>(-8,-2)

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