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# PARAMETRIC EQUATIONS - C4 Question Help please!! watch

1. Attachment 519387519389

I hope it's just 3am talking, but I can't for the life of me work out why BF = 3/2a
(part iii)

Have inserted both question and mark scheme

June 2006, MEI C4
Attached Images

2. Also, the part about OF

and part iv)

Thank you to any magician that helps
3. (Original post by Beenieeee)

and part iv)

Thank you to any magician that helps
Try doing it right and it might work
4. (Original post by Beenieeee)
...
It says that the point B satisfies the equation of which is a solution. That is, B is situated at the point with parameter .

Since BF is parallel to the y-axis, asking for the height of BF is simply asking for the y-coordinate of B (since F is on the x-axis).

Hence, the y-coordinate is given by .
5. (Original post by Zacken)
It says that the point B satisfies the equation of which is a solution. That is, B is situated at the point with parameter .

Since BF is parallel to the y-axis, asking for the height of BF is simply asking for the y-coordinate of B (since F is on the x-axis).

Hence, the y-coordinate is given by .
Thank you SO much
It seems so easy like that
6. (Original post by Beenieeee)
Thank you SO much
It seems so easy like that
You're very welcome. :-)

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