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Question 2 (20 points)
Write an equation for the parabola whose vertex is at (-8, 4) and passes through (-6, -2).

Respuesta :

The equation of the parabola is y = -1.5(x + 8)² + 4 in the vertex form

Step-by-step explanation:

The equation of the parabola in the vertex form is y = a(x - h)² + k

where

1. (h , k) are the coordinates of its vertex point

2. x and y are the coordinates of a general point on the parabola

∵ The equation of the parabola is y = a(x - h)² + k

∵ The vertex of the parabola is (-8 , 4)

∴ h = -8 and k = 4

∵ The parabola passes through point (-6 , -2)

∴ x = -6 and y = -2

- Substitute these values in the equation above to find value of a

∴ -2 = a(-6 - -8)² + 4

∴ -2 = a(-6 + 8)² + 4

∴ -2 = a(2)² + 4

∴ -2 = 4a + 4

- Subtract 4 from both sides

∴ -6 = 4a

- Divide both sides by 4

∴ a = -1.5

∴ The equation of the parabola in the vertex form is:

   y = -1.5(x + 8)² + 4

The equation of the parabola is y = -1.5(x + 8)² + 4 in the vertex form

Learn more:

You can learn more about the parabola in brainly.com/question/9390381

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