If x equals -8 and xy equals 1 what does y equal?

Answer 1

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.