Question

I need to find the equation of a parabola using the points (5,2) (6,1) (4,1). I need it in ax^2+bx+c. I have no clue how to do it. Please help..

Answer 1

Which of those 3 do you think is the vertex?

Answer 2

The vertex is (5,2). I am trying to use it on geoegbra

Answer 3

Do you have a graph to show or no?

Answer 4

It may be the vertex but idk

Answer 5

Yes I will post a picture. One second

Answer 6

ok

Answer 7

Do you know that these points are (x,y) points respectively. So you can substitute in the three points so that you get three equations in three unknwons. For example!e the first eqn is:
1=a*(4^2) + b (4) + c
Just follow the same logic and solve for a,b,c in whatever system you get

Answer 8

James it will not let me post a picture

Answer 9

If you want a picture I'll have to email it to you

Answer 10

ok my email is tjsimmons2015@gmail.com

Answer 11

I sent it