Question

Y is inversely proportional to x, when Y= 120, x = 2, True or False: the constant of proportionality, k, is 240.

Answer 1

True

Explanation:

given y is inversely proportional to x, then the equation relating them is

y =
`(k)/(x)` ← k is the constant of proportionality

to find k , substitute y = 120, x = 2 into the equation

120 =
`(k)/(2)` ( multiply both sides by 2 to clear the fraction )

2 × 120 = 2 ×
`(k)/(2)` , then

240 = k