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

(4,0)

Answer 2

When (2,1)
y < -x + 4
1 < -2 + 4
1 < 2
TRUE

Answer 3

When (1,2)
y < -x + 4
2 < -1 + 4
2 < 3
TRUE

Answer 4

When (4,0)
y < -x + 4
0 < -4 + 4
0 < 0
FALSE

Answer 5

When (3,-2)
y < -x + 4
-2 < -3 + 4
-2 < 1
TRUE