AIBU to ask for help with a Maths question?

[Tenerifexxx]

on behalf of DD?

The question is on the attached picture.

She has been asked to do this question using geogebra. Any methods using geogrbra would be much appreciated 😁

So a quadratic equation is
y=ax^2 + bx + c

ie 3 unknowns.

Pick three pairs of (x,y) and you can form 3 simultaneous equations to solve.

I have a maths degree and have never heard the term 'geogebra'.
I will look it up.

What year as a matter of interest?

GeoGebra seems to be a software package...

TeenPlusTwenties
Yes , it's a graph drawing software . It's for year 12 maths.

@TeenPlusTwenties

DD says a massive thank you for your suggested method. It worked a treat!

ps If she wants to get the turning point in the right place then she needs to differentiate to find it (but I guess she knows that).