Question

Choose all correct answers. Which of the following are solutions of the system?

y < 3 and x + y > 8


(9, 2)


(2, 2)


(10, 0)


(2, -1)

Answer 1

A and C should be correct

Answer 2

because...

Answer 3

if (9,2) 2<3 (true) , 9+2>8 (true)

if (2,2) 2<3 (true) , 2+2>8 (false)

if(10,0) 0<3 true , 10>8 true

if (2,-1) -1<3 true , 2>8 false

Do you understand it ?? :)

Answer 4

on the last one is

if (2,-1) -1<3 true , 2+(-1)>8 false anyway !