Which point belongs to the region represented by x + y ≤ 0?

Which point belongs to the region represented by x + y ≤ 0? Correct Answer (7, −9)

Calculation:

Given x + y ≤ 0

By option verification,

i.e., substituting the options in given equation and verifying

Substituting option 1 i.e. (x, y) = (4, 5)

4 + 5 ≤ 0

⇒ 9 ≤ 0

So, option 1 is False

Substituting option 2 i.e. (x, y) = (−7, 9)

−7 + 9 ≤ 0

⇒ 2 ≤ 0

So, option 2 is False

Substituting option 3 i.e. (x, y) = (7, −9)

7 + (−9) ≤ 0

⇒ −2 ≤ 0

So, option 2 True

Substituting option 4 i.e. (x, y) = (2, 3)

2 + 3 ≤ 0

⇒ 5 ≤ 0

So, option 4 is False

Therefore, (7, −9) belongs to the region x + y ≤ 0

Related Questions

How far is point 'R' from Point 'T'? Statement (I): Point 'R' is 5 metres to the north of point 'M'. Point 'U' is 4 metres to the east of point 'R'. Point 'T' is to the west of point 'R' such that points 'U' 'R' and 'T' form a straight line of  metres. Statement (II): Point 'Z' is metres to the south of point 'T'. Point 'U' is  metres to the east of point 'T'. Point 'M' is  metres to the east of point 'Z'. Point 'R' is  metres to the north of point 'M'. Point 'R' lies on the line formed by joining points 'T' and 'U'.