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romanna [79]
4 years ago
5

Suppose that y is directly proportional to x, and y = −16 when x = −2. What is the constant of proportionality?

Mathematics
2 answers:
trasher [3.6K]4 years ago
5 0

Answer:

In the given expression the constant of proportionality is  k = 8.

Step-by-step explanation:

The quantity P is said to be directly proportional to Q if they vary in proportion to each other.

Here, P ∝ Q ⇔  P = kQ : k = Proportionality Constant

Now, here given y ∝ x   and x =  -2, y = -16

Now, y ∝ x ⇒  y =  kx

or, (-16)   = k (-2)

or, k = 16/2  = 8

 ⇒ k = 8

So, for k = 8, y ∝ x

Hence, in the given expression the constant of proportionality is  k = 8.

yan [13]4 years ago
4 0

Answer:

8

Step-by-step explanation:

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