Find area of a quadrilateral

[Ilikebugs]

I don't know how to start

 

[tkhunny]

Use the three given points to specify completely the equation of the parabola. That vertex might help make it a bit easier.

 

[stapel]

View attachment 8004

I don't know how to start

What equations have they given you for quadratics? They'd probably be the place to start.

(There are different equations, so you'll need to tell us what they've given you, and then show how you've tried to use this info.) Thank you!