pozicijombx

2022-01-20

How to find the formula of a quadratic function knowing that it contains the points $(-2,\text{}2)$ and $(0,\text{}1)$ and $(1,\text{}-2.5)$ ?

Brenton Pennington

Beginner2022-01-21Added 15 answers

Step 1

Find a, b, and c.

Write that this graph passes at the 3 points:

Solve this system of linear equations.

First

Step 2

Finally the quadratic function is:

Check: