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The variables y and x have a proportional relationship, and y = 15 when x = 3. What is the value of x when y = 4?

User Sabbin
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2 Answers

1 vote

Answer:

The answer is 0.8

Explanation:

divide 15 / 3 = 5

then divide 4 / 0.8 that equals 5

User Nxasdf
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5.8k points
5 votes

Answer:


x=(4)/(5)=0.8

Explanation:

We have been given that the variables y and x have a proportional relationship, therefore, we can represent the relationship between x and y as:
y=kx, where k is proportionality constant.

Let us substitute x=3 and y=15 in above equation to find the value of k.


15=k*3


k=(15)/(3)


k=5

Now let us substitute k=5 and y=4 in our proportionality equation to find the corresponding value of x.


4=5x


x=(4)/(5)


x=0.8

Therefore, the value of x will be 0.8, when y equals to 4.

User Malik Ahsan
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5.8k points