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Mathematics 8 Online
OpenStudy (anonymous):

How do you find a constant of proportionality and what is the formula?

OpenStudy (misty1212):

HI!!!

OpenStudy (misty1212):

what do you think?

OpenStudy (misty1212):

jk when it looks like \[y=\color{red}kx\] the constant is \(\color{red}d\)

OpenStudy (misty1212):

oops i mean the constant is \(\color{red}k\) now sure why they always use K though

OpenStudy (anonymous):

Okay

OpenStudy (misty1212):

for example \[y=3x\] constant is 3

OpenStudy (anonymous):

Let me post the question I'm doing really quick

OpenStudy (misty1212):

ok

OpenStudy (misty1212):

must be a hell of a question

OpenStudy (anonymous):

The amount a car dealership earns for selling a car is directly proportional to the price of the car. The table shows this relationship. What is the constant of proportionality? Car price(x)/amount earned (y) so its, 20000/1000= 30000/1500=40000/2000 So I figured since it goes by 500s, that I'd simplify to 10000/500, but now I don't know what to do.

OpenStudy (misty1212):

i think they are all 20

OpenStudy (anonymous):

20?

OpenStudy (misty1212):

all those fractions are 20 right?

OpenStudy (misty1212):

\[20000\div 1000=20\] and so on

OpenStudy (anonymous):

Ah, I see, yes

OpenStudy (anonymous):

Thank you! @misty1212

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