we know that
the formula to calculate the slope between two points is equal to

in this problem we have

substitute the values in the formula



therefore
<u>the answer is the option</u>

if you wrote the problem exactly the way it is asked, there are 10 dogs in the shelter. that's only an approximation...because you can't have half a dog
B. 2 …………………………,.,,,,,.,.,.,.,.,,,.,