Directions: Follow the instructions below to design a fair race for the new video
game Animal Tracks.
1. Choose two animals with different speeds. You can choose from the chart
that starts at the bottom of this page or do research to choose your own.
2. Design a fair race in which the two animals have an equal chance of winning
if they race at their top speed. Here are a few tips for your design:
a. The race is fair if the two animals could finish the race in the same
amount of time.
b. You can give the slower animal a shorter distance to race.
c. Since this is a video game, the race does not need to be realistic—it
can be any length, and the animals can run at a constant speed.
3. Write a system of two linear equations showing the distance each animal can
travel to model the fair race. Be sure to define all variables.
4. Graph the system to prove that the two animals have an equal chance of
winning the race. Explain how the graph proves the race is fair.
Choose two of the animals below:
Animal Speed (mph)
cheetah 70
lion 50
coyote 43
rabbit 35
kangaroo 30
squirrel 12
chicken 9
antelope 61
elk 45
ostrich 40
giraffe 32
elephant 25
pig 11
mouse 8
3 answers
1. The cheetah has a speed of 70mph, while the elephant has a speed of 25mph.
2. To design a fair race, we can give the cheetah a shorter distance to run than the elephant. Let's say the cheetah will run a distance of 2000 meters, while the elephant will run a distance of 5000 meters.
3. Let x be the time it takes for the cheetah to run 2000 meters, and y be the time it takes for the elephant to run 5000 meters. We can model the fair race with the following system of linear equations:
2000 = 70x (distance = speed x time for the cheetah)
5000 = 25y (distance = speed x time for the elephant)
4. To graph this system, we can use the slope-intercept form of the equations:
x = 2000/70 = 28.57 (solve for x)
y = 5000/25 = 200 (solve for y)
The graph of the system will have the cheetah's distance on the x-axis and the elephant's distance on the y-axis. The equations represent two lines that intersect at the point (2000, 5000). This point is the solution to the system and shows that if the cheetah runs 2000 meters and the elephant runs 5000 meters, they will finish the race at the same time. Therefore, the race is fair.
The graph proves the race is fair because the point of intersection shows the distance at which both animals will finish the race at the same time. Additionally, we can see from the slope of the lines that the cheetah is traveling at a much faster speed than the elephant, so it makes sense that the cheetah would need to run a shorter distance to make the race fair.
2. Financial analysts and accountants use math to perform various calculations, such as determining profitability and return on investment, analyzing market trends, creating budgets and projections, and ensuring that all financial records are accurate and meet legal and regulatory requirements.