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At the museum you can buy 3 postcard for 5.40 6 postcards for 10.80 or 9 postcards for 16.20 What is the constant of proportionality for buying postcard

User IAhmed
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1 Answer

5 votes
x. y
3 postcards for $5.40
6 postcards for $10.80
9 postcards for $16.20
To find the constant of proportionality, take y/x, so
$5.4/3
$10.8/6
$16.2/9
They all equal $1.80/1. As a result, the constant of proportionality is $1.80 for 1 postcard. Hope it help!
User Mike Elahi
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8.6k points
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