Pinpointing the Vertex: Analyzing the Quadratic Equation y = (x+1)² - 1

Find the vertex of the parabola

y=(x+1)21 y=(x+1)^2-1

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Step-by-step video solution

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00:00 Find the vertex of the parabola
00:03 We'll use the formula to describe a parabolic function
00:08 The coordinates of the vertex are (P,K)
00:13 We'll use this formula and find the vertex point
00:25 We'll substitute appropriate values according to the given data
00:31 And this is the solution to the question

Step-by-step written solution

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1

Understand the problem

Find the vertex of the parabola

y=(x+1)21 y=(x+1)^2-1

2

Step-by-step solution

The given equation of the parabola is y=(x+1)21 y = (x+1)^2 - 1 .

This equation is already in the vertex form, y=a(xh)2+k y = a(x-h)^2 + k , where (h,k)(h, k) is the vertex.

By comparing, we identify:
The expression (x+1)(x + 1) implies that h=1h = -1 (since x+1x + 1 is equivalent to (x(1))(x - (-1))).
The constant 1-1 is the kk value.

Thus, the vertex (h,k)(h, k) is (1,1)(-1, -1).

Therefore, the vertex of the parabola is at the point (1,1)(-1,-1).

3

Final Answer

(1,1) (-1,-1)

Practice Quiz

Test your knowledge with interactive questions

The following function has been graphed below:

\( f(x)=x^2-6x \)

Calculate point C.

CCCAAABBB

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