Thread: Curve Intersections...

A and B are the intersections of the curve y=12/x and the line y+x=7. Find the co-ordinates of A and B. What method do I use for this?

Originally Posted by digideens

A and B are the intersections of the curve y=12/x and the line y+x=7. Find the co-ordinates of A and B. What method do I use for this?

You need to solve,


Substitute,

Mutiply by to get,

Thus,

Factor,

Set each factor equal to zero and solve,


Graphically it is demonstrated below

thanks a lot.