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Mathematics 9 Online
OpenStudy (anonymous):

Find the constant of proportionality and the unit rate for the data in the table. Then write an equation to represent the relationship between time t and distance d.

OpenStudy (anonymous):

OpenStudy (anonymous):

from here you see that \[d \alpha t\]

OpenStudy (anonymous):

\[d=kt\]

OpenStudy (anonymous):

we substitute the values from the table in the equation and observe any similarities or differences

OpenStudy (anonymous):

now time changes by 2 until last time

OpenStudy (anonymous):

changes in d and changes in t is very important

OpenStudy (anonymous):

\[\Delta d=k \Delta t\]

OpenStudy (anonymous):

\[\int\limits_{d_0}^{d_1} \Delta d = \int\limits_{t_0}^{t_1} k \Delta t\]

OpenStudy (anonymous):

\[d_1-d_0=k(t_1-t_0)\]

OpenStudy (anonymous):

lets take 135-90=k(3-2) k=45 lets take 225-135=k(5-3) k=90/2=45 there4 k=45 can be confirmed

OpenStudy (anonymous):

\[k=45\]

OpenStudy (anonymous):

can you see the equation above

OpenStudy (anonymous):

@Xero1999 can you see the answer

OpenStudy (anonymous):

i think the constant of propotionality is the unit rate

OpenStudy (anonymous):

Yes i do Thanks a lot!

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