peaceandlovee peaceandlovee
  • 12-09-2017
  • Mathematics
contestada

can someone pls help

can someone pls help class=

Respuesta :

mreijepatmat
mreijepatmat mreijepatmat
  • 12-09-2017
y-k = a(x-h)²; h and k are given vertex(0,3), then

y -3 = a(x-0)²→ y = ax² + 3. From the table we can calculate a:(for x =1, y=2)

2 =a(1²) +3→ 2= a + 3 and a = -1, hence the equation:

y = -x². It's a parabola open downward with a max at (0,3)

y' = - 2x: This is the equation of the tangent with a rate of change = -2

Another way:
For x = 8, y₁'= -16. For x = 9, y₂' = -18

y'₂ - y'₁ = -18 + 16→ rate of change = -2

Answer Link

Otras preguntas

A town is planning a playground. It wants to fence in a rectangular space using an existing wall. What is the greatest area it can fence in using 100 feet of do
What is the probality of rolling a sum of 5 if two regular 6 -sides number cubes are rolled
The ratio of dogs to cats being adopted today at the animal rescue center is 7 to 5. If there are 70 cats up for adoption, how many dogs are there?
What is the area of the triangle?
Let f(x) = √x-5 Find f^ -1.
Solve the inequality. Graph the solution. 8y−5<3
How do you do this? 25 pts
Psalm 2 describes the Messiah.true of false
Which action is a form of grassroots activism that supported or opposed sam-sex marriage
The sum of two numbers is 20. Twice one number is 4 more than four times the other