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Gnom [1K]
3 years ago
8

What is the vertex and x-intercepts of the graph of the function below y=x^2-6x-7

Mathematics
2 answers:
labwork [276]3 years ago
6 0

Answer:  The vertex is (3, 16) and the x-intercepts are (-1, 0) and (7, 0).

Step-by-step explanation:  We are given to find the vertex and x-intercepts of the graph of the following function :

y=x^2-6x-7~~~~~~~~~~~~~~~~~~~~~~~~~~~`(i)

We know that

the vertex of the graph of function y=a f(x-h)^2-k is given by (h, k).

From equation (i), we have

y=x^2-6x-7\\\\\Rightarrow y=(x^2-6x+9)-7-9\\\\\Rightarrow y=(x-3)^2-16.

Therefore, the vertex is (3, 16).

The x-intercepts of function (i) will be given by

x^2-6x-7=0\\\\\Rightarrow x^2-7x+x-7=0\\\\\Rightarrow x(x-7)+1(x-7)=0\\\\\Rightarrow (x+1)(x-7)=0\\\\\Rightarrow x+1=0,~~x-7=0\\\\\Rightarrow x=-1,~~x=7.

Thus, the vertex is (3, 16) and the x-intercepts are (-1, 0) and (7, 0).

Strike441 [17]3 years ago
4 0

Answer:

x=(7,0),(-1,0) y=(0,-7)

Step-by-step explanation:

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