carterhadland
carterhadland carterhadland
  • 13-06-2019
  • Mathematics
contestada

Solve the system
{f (x) = 2x-1
{g (x) = x^2-4

Respuesta :

marcthemathtutor
marcthemathtutor marcthemathtutor
  • 13-06-2019

Answer:

2 sets of possible solutions:

x=3, y = 5

and

x=-1, y = -3

Step-by-step explanation:

Using the graphical method, (see attached)

you can graph both equations and find their intersection points.

From the attached plot, you can see that the graphs intersect at (3,5) and (-1,-3)

Alternatively, you can solve this numerically by solving the following system of equations. You will get the same answer.

y = 2x + 1 ------------------- eq. (1)

y = x² - 4 ------------------- eq. (2)

Ver imagen marcthemathtutor
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