The following graph shows a proportional relationship.
What is the constant of proportionality between yyy and xxx in the graph?
Constant of proportionality ==equals
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Given : graph showing a proportional relationship.
To Find : constant of proportionality between y and x in the graph
Solution:
From the graph for
x = 1 , y = 3.5
x = 2 , y = 7
y ∝ x
=> y = kx
substituting x = 1 , y = 3.5
=> 3.5 = k (1)
=> k = 3.5
Hence Value of k is 3.5
substituting x = 2 , y = 7
=>7= k (2)
=> k = 3.5
Hence Value of k is 3.5
Constant of proportionality k = 3.5
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