What is the slope of the line below

The answer is C (-1)

Step-by-step explanation:

There are many ways to work this out, however the method I find more accurate and simple is:

Take both of the points y co-ordinates.

(1, 7)

(3, 5)

Then you place them into a fraction like so:

7 - 5 / ?

Then you use the x co-ordinates to get:

7 - 5 / 1 - 3

7-5= 2

1-3 = -2

2 divided by -2 = -1

(2,20) means that the 2 is 2 hours and 20 is 20$. so there both 20$ for 2 hours only the same price. like it says. so, the dunk tank and the bounce house are the same price (20$) for the same amount of time (2 hours).

hope i

step-by-step explanation: