laz8ardlogaconnonel laz8ardlogaconnonel

01-04-2017
Mathematics

contestada

What is the vertex of this equation?
y=-x^2+10x-21

(5, 4)

(1, -9)

(-4, -2)

(7, -3)

Respuesta :

sqdancefan sqdancefan

25-09-2019

Answer:

(5, 4)

Step-by-step explanation:

The equation can be written in vertex form by adding and subtracting 25:

y = -(x^2 -10x +25) -21 +25

y = -(x -5)^2 +4

Then the vertex can be identified as (5, 4).

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