132k views
5 votes
Michelle needs to convert the function f(x) = x2 - 10x +31 to vertex form, fx) = (x - 1)2 + k, in order to find the minimum.

When she does this, what is the value of k in the vertex form of function ?
26
56
31
6

2 Answers

5 votes

Answer:

the answer is 6

Explanation:

User Biswajit Panday
by
8.2k points
2 votes
To find k

You can do

C-a((b/2)^2))

This is because when you complete the square you have the c value that you have initially minus the new c value which is found by (b/2)^2 and if you factored a number out then multiply it to that.

So in this case

31- 1(10/2)^2

31-(5)^2

31-25

6


User Goku
by
8.0k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories