the function g(x) = 8x2 – 48x 65 written in vertex form is g(x) = 8(x – 3)2 – 7. what is the vertex of g(x)? (–3, –7) (3, –7) (24, –7) (–24, –7)
g(x)=8(x-3)-7
The number in the parentheses has to be changed to positive 3.
You keep the number (-7) the same sign it already is. The vertex is (3,-7)
Answer:
option (2) is correct.
The vertex is (3 , -7)
Step-by-step explanation:
Given: the function \(g(x) = 8x^2-48x+65\) written in vertex form is\(g(x) = 8(x-3)^2-7.\)
We have to write the vertex form of g(x).
For a given quadratic function \(f(x)=ax^2+bx+c\) , we can rewrite it in vertex form \(f(x)=a(x-h)^2+k\) , where (h , k) represents the vertex of the function f(x).
For the given quadratic function \(g(x) = 8x^2-48x+65\) written in vertex form is \(g(x) = 8(x-3)^2-7.\)
On comparing , we get
h = 3 and k = -7
Thus, the vertex is (3 , -7)
Thus, option (2) is correct.