Maths Extension - HarderCoordinate Geometry Help (1 Viewer)

[alex4nder]

Hi, in harder coordinate geometry, dividing intervals into given ratios what does a partially negative ratio mean?

Question is:
Find the point dividing the interval AB into the ratio 7:-2, where A=(-3,2) & B=(7,-3)
I have no idea what the -2 in the ratio does?? Is it to do with external division?

Thanks

 

[Kurosaki]

Yes, it has to do with external division.

 

[Kurosaki]

However, you substitute everything in the same way as you would for internal division (except obviously one of the constants Is negative)

 

[alex4nder]

Okay, thanks for your help