yasminrae0606 yasminrae0606
  • 03-11-2017
  • Mathematics
contestada

Check all of the following that are solutions to the system shown below.

y = -x 2 - x + 2 and x + y = -2

(2, -4)
(-2, 4)
(-2, 0)
(0, -2)

Respuesta :

sandrewxuoyrgn4
sandrewxuoyrgn4 sandrewxuoyrgn4
  • 03-11-2017
First, all of them fulfill the second equation. Then, you try the values in the first function. You will find that (-2,0) works, and (2,-4) works.
Answer Link
Rod44 Rod44
  • 03-11-2017
We can write y=-2-x. So we can write -2-x=-x²-x+2 because y equals both of these expressions, so the expressions must be equal. The x terms cancel out and we’re left with x²=4 so x=2 and y=-2-2=-4; and x=-2 and y=2-2=0. So the ordered pairs are (2,-4) and (-2,0). These are answer options 1 and 3.
Answer Link

Otras preguntas

A(n)\ is not housed in a department, but is rather headed by an administrator who reports directly to the president
An atom with seven valence electrons would most likely lose an electron to become stable true or fasle
Explain THREE benefits of investigative radio or television programmes (such as Utatakho, Carte Blanche and Speak out show, Hloka la tsela show) and show how th
A dentist uses a concave mirror to examine a tooth that is 1cm in front of the mirror. The image of the tooth forms 10cm behind the mirror. a. What is the mirro
Look at the image below. Find the area of the parallelogram.
Would Evekeo be a good pill for someone with ADHD?
what is the product –8(7 – 3 .2)
what is 252 in index form
The Quad-Entry diary is a strategy to use during?
A gardener is putting a fence around his garden. His garden is 6 feet long and 2 feet wide. How many feet of fence does he need?