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

What is one half added to three tenths
Signs of Roman decline were manifested by agricultural and economic prosperity which undermined the values of Rome. the weakening of Rome's army which was force
Why should mass not be represented by an arrow?
how does art inspire some people
Which statement best describes how the energy stored in ATP is released to drive biochemical reactions? a. Energy is released when the ribose sugar reacts with
what is the theory that tax cuts can raise supply called
The sum of two numbers is 104 and one exceed the other by 10. What are the numbers?
How many $0.21 pencils can be purchased for $7.00? Show your work.
Give an example of oxidation reaction which can be a nuisance
Pentane, C5H12, will react as shown below: ____C5H12(l) + ____O2 --- ______CO2 +_______ H2O H20(g) 1. Balance the equation above by putting coefficients into ea