Posted by **Greg** on Saturday, October 31, 2009 at 8:37am.

how would you work out

y=2/x

and

y=-n/x

the minus is for the whole fraction

please show your working

thanks in advance :)

- Maths -
**Reiny**, Saturday, October 31, 2009 at 9:28am
What do you mean by "work out" ?

Are you graphing the function ?

Make a table of values and graph some of the points. You should see what happens to the graph.

Try to get a "feel" for the numbers.

e.g. as you pick larger x's, doesn't the value of 2/x become smaller and smaller?

similarly if you pick fractional values of x, doesn't 2/x become larger and larger. What happens if you pick x = 0 ? OH oh!

Now try an x close to zero, say x = .01

Can you see the pattern?

Now repeat, using negative values of x.

Now change your equation to y = 5/x or something like that.

Can you generalize what y = n/x would look like?

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