# What is the equation of the parabola that has a vertex at # (-3, 6) # and passes through point # (1,9) #?

##### 1 Answer

Dec 19, 2015

#### Explanation:

The parabola

1st of all, we know this parabol has a vertex at

We now have to deal with two unknown parameters,

We now substract the 1st line to the 2nd one in the 2nd line :

We replace