swordofthelordp7hvx3 swordofthelordp7hvx3
  • 22-03-2019
  • Mathematics
contestada

Which of the following points is a solution of the inequality y < -|x|?

(1, -2)
(1, -1)
(1, 0)

Respuesta :

gmany
gmany gmany
  • 23-03-2019

Answer:

[tex]\large\boxed{(1,\ -2)}[/tex]

Step-by-step explanation:

[tex]|a|=a\ \text{for}\ a\geq0\\\\|a|=-a\ \text{for}\ a<0\\\\\text{Examples}\\\\|3|=3,\ |1.6|=1.6\\|-3|=-(-3)=3,\ |-1.6|=1.6\\===================[/tex]

[tex]y<-|x|\\\\\text{Put the values of x and y from the coordinates of the points and check inequality}\\\\(1,\ -2)\to x=1,\ y=-2\\-2<-|1|=-1\qquad\text{CORRECT :)}\\\\(1,\ -1)\to x=1,\ y=-1\\-1<-|1|=-1\qquad\text{FALSE :(}\\\\(1,\ 0)\to x=1,\ y=0\\0<-|1|=-1\qquad\text{FALSE :(}[/tex]

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