Help?

[lukejosephginter]

y = a(x - p)(x - q), may anyone please define this formula for me?

[StaceyKoprince]

Please read (and follow!) forum guidelines before posting. This question should be posted in the General Quant folder.

[dinesh19aug]

First multiply (x-p)(x-q)
==> x^2 - xq - px + pq

Next multiple with a
==> ax^2 -axq - apx + apq

[thoppae.saravanan]

Hi,

Not able to get your question - how to define the formula. Could you please elaborate on what you are looking for? If it just expanding the right hand side of the equation then answer above is right.

[michael_shaunn]

y=a(x-p)(x-q) represents a quadratic equation where p and q are the respective roots of the given quadratic equation which when substituted in place of x will give y=0.

As far as 'a' is considered, it sets the orientation of the graph for the given quadratic equation i.e. whether the graph for this equation opens in the +ve y direction(if a is positive) or in the -ve y direction(if a is -ve).However, it('a') has no effect on the roots of the given quadratic equation.