You mean -1 = xy , right?
If we think of y against x, then it's like y = -1/x .... It's not linear.
But if we consider y against 1/x , it's linear....
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no. its an exponential with a vertical zero axis
No because when you place x in terms of y, you get y = 1/x ( by dividing both the sides by x). This is not linear because the power of x is (-1) and for a linear relationship, you need the power of x to be (1).
Multiply through by xy to bring terms in x and y to the top, and you find an xy term popping up as well. So it's non--linear. On the other hand if you plot (1/y) vs (1/x) it is linear in terms of those particular variables
So far you know that: x=-8 xy=1 so xy means x times y. If you split xy. y=1/x or y=1/-8 1/-8= -0.125 You can find out that this is correct with the formula xy=1 because -0.125 x -8 is 1.
-1/8 -8*-1/8 = 1