livewithoutme56 livewithoutme56
  • 18-12-2018
  • Mathematics
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The value of y is directly proportional to the value of x. If y = 288 when x = 32. What is the value of y when x = 25?


Algebra 1

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jimrgrant1 jimrgrant1
  • 18-12-2018

Answer:

y = 225

Step-by-step explanation:

since y and x are directly proportional the equation relating them is

y = kx ← k is the constant of proportionality

to find k use the given condition y = 288 when x = 32

k = [tex]\frac{y}{x}[/tex] = [tex]\frac{288}{32}[/tex] = 9

y = 9x ← is the equation of proportionality

when x = 25, then

y = 9 × 25 = 225


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