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TEA [102]
2 years ago
5

What is the Unit Rate for each cyclist?

Mathematics
1 answer:
allsm [11]2 years ago
6 0

Answer:

Cyclist A  12 mi/h

Cyclist B  5 mi/h

Cyclist C  9 mi/h

Cyclist D  10 mi/h

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form y/x=k or y=kx

In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin

In this problem the relation between the distance and the time represent a direct variation

Let

y -----> the distance in miles

x ----> the time in hours

The unit rate is the same that the slope or constant of proportionality of the linear equation

<em>Cyclist A</em>

we have

The cyclist can ride 24 miles in 2 hours

The unit rate is equal to divide the total distance by the total time

so

\frac{24}{2}=12\ \frac{mi}{h}

<em>Cyclist B</em>

Looking at the table

For x=1 h, y=5 mi

k=y/x

substitute

k=\frac{5}{1}=5\ \frac{mi}{h}

<em>Cyclist C</em>

we have

y=9x

Remember that the unit rate is equal to the slope

so

m=9\ \frac{mi}{h}

<em>Cyclist D</em>

Looking at the graph

For x=1 h, y=10 mi

k=y/x

substitute

k=\frac{10}{1}=10\ \frac{mi}{h}

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