Question

Which of the following ordered pairs is not a solution to the inequality y < -x + 4?

(1, 2)

(2, 1)

(4, 0)

(3, -2)

Answer 1

Try plugging in the sets of values. That should work.

Answer 2

For example, the first set mean that x=1 and y=2. Put those values in the original inequality and see whether the inequality is true.

Answer 3

*means*

Answer 4

i still dont get it.

Answer 5

The sets of solutions given are in (x,y) form. The first, (1,2), plugged into the inequality
y < -x + 4 becomes 2<-1+4 which is very true. Meaning that (1,2) is a solution and that you need to try the next set, and so on until you find something like 2<1 which is not true.