Which of the following represents the x-intercepts and the vertex of the quadratic relation y = −x2 − 6x + 27?
Question
Which of the following represents the x-intercepts and the vertex of the quadratic relation y = −x2 − 6x + 27?
Solution
The x-intercepts of the quadratic equation are found by setting y = 0 and solving for x.
So, we have:
0 = -x^2 - 6x + 27
This can be factored to:
0 = -(x - 3)^2 + 9
Setting each factor equal to zero gives the solutions x = 3.
The vertex of a parabola y = ax^2 + bx + c is given by the point (h, k), where h = -b/2a and k = f(h).
In this case, a = -1 and b = -6, so h = -(-6)/2*(-1) = 3.
Substituting x = 3 into the equation gives:
y = -(3)^2 - 6*3 + 27 = 9
So, the vertex of the parabola is (3, 9).
Therefore, the x-intercepts and the vertex of the quadratic relation y = -x^2 - 6x + 27 are x = 3 and (3, 9) respectively.
Similar Questions
Which of the following represents the x-intercepts and the vertex of the quadratic relation y = x2 − 4?
Which of the following points represents the x-intercepts of the quadratic equation y = x2 + 5x + 6?
the x-intercepts and the vertex of the parabola defined by y = x2 - 9?
Which of the following points represents the x-intercepts of the quadratic equation y = x2 + 9x?
What are the vertex and x-intercepts of the graph of the function given below?y = x2 - 2x - 48A.Vertex: (0, 0); intercepts: x = -4, 6B.Vertex: (1, -49); intercepts: x = 8, -6C.Vertex: (-1, -21); intercepts: x = 6, 4D.Vertex: (1, -40); intercepts: x = 6, 7SUBMITarrow_backPREVIOUS
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.