The variables x and y vary directly. Use the given values to write an equation that relates x and y: x = 4, y = -16

Mathematics

1 answer:

Gnesinka [82]3 years ago

4 0

Vary Directly: y = k*x

Vary Inversely: y = k/x

Because x and y vary directly, our equation will look like the first one.

y = k*x

With the inputted values:

-16 = k * 4

Now, to find k, isolate the variable

k = -16/4 = -4

Your final equation will then look like this:

y = -4 * x

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