3 years ago

X is inversely proportional to y, and x = 18 when y = 4. Write an equation relating the two

Mathematics

1 answer:

Alenkasestr [34]3 years ago

8 0

Answer:

$xy=72$

Step-by-step explanation:

If x is inversely porportionaly to y, then for some constant k,

$x = \frac{k}{y}\\xy=k$

Since y is 4 when x = 18, k is equal to 4*18=72, so the equation is:

$xy=72$

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