QueenAcearies
QueenAcearies QueenAcearies
  • 15-03-2016
  • Mathematics
contestada

solve the system of equation
y=2X^2-3
y=3X-1

Respuesta :

apologiabiology
apologiabiology apologiabiology
  • 15-03-2016
since they both equal y
2x^2-3=y=3x-1
2x^2-3=3x-1
subtract 3x from both sides and add 1
2x^2-3x-2=0
factor
(x-2)(2x+1)=0
set each to zero
x-2=0
x=2

2x+1=0
2x=-1
x=-1/2

subsitute
y=3x-1

y=3(2)-1
y=3(-1/2)-1

y=6-1
y=-3/2-2/2

y=5
y=-5/2

so solutions are
x=2 and y=5 or
x=-1/2 and y=-5/2

(x,y)
(2,5) or (-1/2, -5/2)


Answer Link

Otras preguntas

Which of the following statements is true? (1) HPV causes cancer of the cervix in females. (2) Hepatitis B virus causes cancer of the liver. (3) Many viral dise
What is the definition of role on the wall
is .01 less than .07
What numerical or variable expression represents the number of days in 3 weeks
in the sentence the frozen drops of water fell from the sky covering everything like a white blanket non fiction or fiction
What is 3 and 1/8 + 1 and 2/5 ? please answer I need help with my hw
A small rectangular block of metal must be a magnet is ita. Aligns itself east west when hung up from the ceilingb. Is attracted towards a magnet c. Is made of
If 7 + 3x = 22, then 2x =
If the sale tax is 8.875, find the total cost you would pay for : A 22.50 shirt A 6,500 car A house for 750,000
If the sale tax is 8.875, find the total cost you would pay for : A 22.50 shirt A 6,500 car A house for 750,000