Find the slope-intercept form of an equation for the line that passes through (–1, 2) and is parallel to y = 2x – 3.

For this case we have that by definition, the equation of the line of the slope-intersection form is given by:

Where:

m: It's the slope

b: It is the cut point with the y axis.

By definition, if two straight lines are parallel then their slopes are equal. Thus, the slope of the line sought will be

We substitute the given point to find b:

Finally the line is:

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