moochpoop moochpoop
  • 04-05-2022
  • Mathematics
contestada

A parabola y= ax^2 + k
passes through the points (-1, -3) and (3, 13). Find the values of a and k

Respuesta :

bobymcbobbing bobymcbobbing
  • 04-05-2022

Answer:

use vertex form of parabola:

y=a%28x-h%29%5E2%2Bk....if vertex (0,7), we have

y=a%28x-0%29%5E2%2B7

y=ax%5E2%2B7......use point (3,2) to find a

2=a%2A3%5E2%2B7

2=9a%2B7

2-7=9a

-5=9a

a=-5%2F9

so, your equation is: y=-%285%2F9%29x%5E2%2B7

Step-by-step explanation:

Answer Link

Otras preguntas

Jill is 4 years younger than half Janet’s age. If Janet is y years old, which expression describes how old Jill is? a. 1/2y -4 b. 1/2y +4 c. 4- 1/2y d. 4+ 1/2y
help easssssssssssssssssy
What are the factors of the product represented below (3x+1)(2x+3)?
After a trip to monticello, randall had a number of $1 and $2 bills in his pocket. if he had 13 bills worth a total of $15, how many bills did he have of each t
20 points How does a debit card differ from a credit card? Why are you less likely to incur crushing debt if you use a debit card rather than a credit card?
According to bmi tables someone with a bmi of 29.5 would be categorized as
What is the double layered sac that surrounds the heart
Which supreme court case developed the exclusionary rule? select one: a. wolf v. colorado b. parker v. gideon c. new york times v. sullivan d. mapp v. ohio?
The questions who, what, why, when, where, how, and how much were introduced as a way to
Select the correct order of courses on the French menu! A) plant principal, digestif, entrée, café, dessert B) apéritif, café, plant principal, digestif, from