# Solving Problems Involving Quadratic Relations.

Show 40 post(s) from this thread on one page
Page 2 of 2 First 12
• Nov 13th 2011, 07:12 PM
Quacky
That sounds like a severe problem. I'd suggest either telling a learning supervisor or having a parent contact the school to complain.

For future reference, on this question, we know the t-intercepts are 0 and 9. You could find the highest point by symmetry - it will be the height that lies halfway between these, which is when t=4.5, so you can substitute that into the formula instead of worrying about vertex form.
• Nov 14th 2011, 02:33 AM
mr fantastic
Quote:

Originally Posted by Quacky
That sounds like a severe problem. I'd suggest either telling a learning supervisor or having a parent contact the school to complain.

For future reference, on this question, we know the t-intercepts are 0 and 9. You could find the highest point by symmetry - it will be the height that lies halfway between these, which is when t=4.5, so you can substitute that into the formula instead of worrying about vertex form.

1. I'm not saying it's necessarily the case here, but it's pretty easy for a student to blame the teacher for the student's own short-comings, particularly when that student enrols in a subject (often after getting advice not to) for which they are completely a fish out of water. That is not the teacher's fault.

2. Surely it's the teacher's job to provide solutions to review questions, in which case that is who should be asked.