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Mandarinka [93]
2 years ago
12

Variables y and x have a proportional relationship, where y = 18 when x = 2.

Mathematics
1 answer:
Mandarinka [93]2 years ago
6 0

Answer:

<h2> x = 324 </h2>

Step-by-step explanation:

<h3>y=Kx</h3>
  • <u>make k the subject of formula</u>
<h3>=> Kx = y</h3><h3>=> k = y/x</h3>
  • <u>add the value of y = 18 when x = 2.</u>
<h3>=> k = 18/2</h3>
  • divide 18 by 2
<h3>=> k = 9</h3>

<em><u>What is the value of x when y = 36?</u></em>

<h3>=> x = Kx</h3>
  • <u>substitute k equals to 9 and from the question y equals to 36 into this equation</u>
<h3>=> x = 9(36)</h3>
  • <u>multiply 36 by 9</u>
<h3>=> x = 324</h3>
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