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

Judith uses craft sticks to make two 24-inch by 12-inch rectangles. What is the total perimeter of the tow rectangles?
In which decade of the twentieth century did the government begin to take a much larger role in the US economy?
undissolved solid particles could best be separated from a solution by
Graph the line with slope -3 passing through the point (1,3)
Solve for x:[tex] \sqrt{6x+4}=7 [/tex]Show steps please
Why do all chemical reactions require activation energy?
What inspired Erwin Chargaff to study the chemistry of nucleic acids?
what is the first modern decade?
Have you ever known anyone who was in an unhealthy relationship? How can you tell if a relationship is unhealthy?
Samuel bought 4 rolls of tape to seal the boxes. Each roll contains 32.9 meters of tape. He uses 1.2 meters of this tape to seal each box. What is the total num