bbenezra310 bbenezra310
  • 01-07-2019
  • Mathematics
contestada

Need help here, please.

Identify the vertex of y = x2 + 4x + 5.

A. (0,0)
B. (–2,9)
C. (–2,1)
D. (4,5)

Respuesta :

absor201
absor201 absor201
  • 01-07-2019

Answer:

Option C is correct.

Step-by-step explanation:

y = x^2+4x+5

We need to find the vertex of the above equation.

The above equation represents the parabola.

The slope of parabola can be found by taking derivative of the given equation

dy/dx = 2x+4

The slope of the parabola at the vertex is zero SO,

2x+4 = 0

2x = -4

x = -4/2

x = -2

Putting value of x =-2 to find the value of y

y = x^2+4x+5

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

y = 4-8+5

y =9-8

y = 1

So, the vertex is (-2,1)

Option C is correct.

Answer Link

Otras preguntas

Describe the qualities and musical elements that contribute to the emotional impact of the music.
Financial accounting provides information for_____decision makers, while managerial accounting provides information for______decision makers.
How could using effective study skills help you in the reading edge?
Find the mass in grams of 0.327 liters of AL
1. The surface area of a cylinder is T=2rtrh+2tr2, where T is the surface area, andr is the radius of the base. A penny is a cylinder with a diameter of 19.05 m
The disadvantages of inbreeding include ________.
what expression is equivalent
What is most closely the meaning of “delicious breath” as it is used in paragraph 5 of the story “story of a hour” A. A smell that is pleasing B. An overbearing
is 0.375 irrational or rational
what is the answer of 10 times 10