i dont understand what it means by y varies inversely as x?
Favorite Answer
If y varies inversely as x, then when x is multiplied by a number, y is divided by that number.
When x = 2, y = -4
When x = -6, x is -3 times what it was before (-6/2 = -3).
y is therefore (-2/6 or -1/3) times what it was before:
y = (-1) * (-4) / 3
= 4 / 3.
y = k/x, with k being a constant (i.e a number) that you don’t know yet.
so first, you need to find k. to do that, just plug in the values of y and x that are given, like so:
y = k/x
-4 = k/2
-4 (2) = k
therefore k = -8
so now you know your equation looks like this: y = (-8)/x
and you know you need to find y when x = -6.
so to find y, just plug in the value x = -6.
hope that clears some things up for you! 🙂
http://www.glencoe.com/sec/math/algebra/algebra1/algebra1_03/study_guide/pdfs/alg1_pssg_G091.pdf
Answer to your question is 1.33
Product Method X1 * Y1 = X2 * Y2. Try it you shall get your answer.
1.3333
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