Question

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Answer 1

@hartnn

Answer 2

no y = 2x

Answer 3

The general equation for "direct variation" is y = k x.

Let y=8 and x=4. Find k. This is called your "constant of variation."

Answer 4

plug in y = 8 and x = 4 into each of the options and see which one fits.

Answer 5

I'm asking y ou to write out y = k x.

Replace y with 8 and replace x with 4.

This is all the info you need to find k.

Answer 6

You'll need to know how to do this later, so you may as well practice now.