The map of a biking trail is drawn on a coordinate grid.

the trail starts at p(−2, 2) and goes to q(5, 2).
it goes from q to r(5, −5) and then to s(8, −5).

what is the total length (in units) of the biking trail?

10
16
17
18

The total length (in units) of the biking trail is:

                          10 units.

We know that the distance between two points A(a,b) and B(a',b') is calculated by using the distance formula:

It is given that:

The trail starts at P(−2, 2) and goes to Q(5, 2).

This means that the distance traveled in this trail is:

and

The other trail goes from Q to R(5, −5) and then to S(8, −5).

i.e.

the distance traveled is:

Hence, the total length of the biking trail 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