What is the equation of a parabola that passes through (-2,2), (0,1), and (1, -2.5)?
See explanation below
A general parabola is like
We need to "force" that this parabola passes thru these points. How do we do?. If parabola passes through these points, their coordinates acomplishes the parabola expresion. It say
Apply this to our case. We have
Now from 3...
The the parabola is