3 years ago

Is a proportional function f(x) = 5x linear? Why or why not? Explain with an example.

1 answer:

6 0

Given two variables x and y, y is directly proportional to x (x and y vary directly, or x and y are in direct variation) if there is a non-zero constant k such that

y = kx,

The relation is often denoted, using the ∝ symbol, as

y ∝ x

in this case k = 5/1

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