Math Is Fun Forum

Au101

Member

Registered: 2010-12-01

Posts: 353

Direct Proportionality

Hello again everyone at mathisfun, happy new year to you all

As part of my attempts to get the new year off to a good start, I've been brushing up on some old, secondary level maths I've now completely forgotten! (All of which makes me feel rather silly! )

I'm rather stuck on the following question:

So, 'no problem,' I thought:

"Right you are!" Says the book. 'Great!' I think, let's move on:

I calculate my values to complete the table based on that and come up with:

While the book has:

Can anybody see where I've gone so wrong?

Ta!

Bob

Administrator

Registered: 2010-06-20

Posts: 10,134

Re: Direct Proportionality

hi Au101

And a very happy New Year to you too. 

Can anybody see where I've gone so wrong?

Yes.  You've made the big mistake of assuming that books are always right. 

Your answers are all correct!

Bob

---

Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

Au101

Member

Registered: 2010-12-01

Posts: 353

Re: Direct Proportionality

Thanks for the confirmation bob bundy!