Welcome to the forum.

If the equation has the form

then you can make three equations by substituting for (x,y) as follows:

(i) (0,0) (ii) (1,2) (iii) (6,0)

That should be enough to work out a, b, and c.

Check by substituting each 'x' value into your finished equation to see if it gives the right 'y'.

Bob

]]>> and i need to form a quadratic equation based on that could you pls help me out with it...........]]>