eeshamysula eeshamysula

03-12-2020
Mathematics

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If y varies directly with x, given x = 4 and y = 8. What is the value of k (constant of proportionality)?

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abidemiokin abidemiokin

11-12-2020

Answer:

2

Step-by-step explanation:

If y y varies directly with x, this is expressed as;

y ∝ x

y = kx

k is the constant of proportionality;

Given

x = 4 and y = 8

Substitute;

8 = 4k

4k = 8

k = 8/4

k = 2

Hence the constant of proportionality k is 2

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