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O GRAPHS AND FUNCTIONSWord problem involving average rate of change

O GRAPHS AND FUNCTIONSWord problem involving average rate of change-example-1
User Moliveira
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1 Answer

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Given:

a)

we get the points (2,71.2) and (4,166.4) from the table.

Consider the rate of change


\text{Rate of change =}(y_2-y_1)/(x_2-x_1)
\text{ Substitute }y_2=166.4,y_1=71.2,x_2=4\text{ and }x_1=2,\text{ we get}


\text{Rate of change =}(166.4-71.2)/(4-2)


\text{Rate of change =}47.6\text{ meters per second.}

The average rate of distance for the distance from 2 seconds to 4 seconds is 47.6 meters per second.

b)

We get the points (6,172.8) and (10, 239.6) from the table.


\text{Rate of change =}(y_2-y_1)/(x_2-x_1)


\text{ Substitute }y_2=239.6,y_1=172.8,x_2=10\text{ and }x_1=6,\text{ we get}


\text{Rate of change =}(239.6-172.8)/(10-6)


\text{Rate of change =}16.7\text{ meters per second.}

The average rate of distance for the distance from 6 seconds to 10 seconds is 16.7 meters per second.

User Kjakeb
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