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HELP!!! Math, Inequalities !!

HELP!!! Math, Inequalities !!-example-1
HELP!!! Math, Inequalities !!-example-1
HELP!!! Math, Inequalities !!-example-2
User Olamiral
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2 Answers

5 votes
1. The coordinate is (-1,-1)

2. The coordinate is(1,-1)
User Hargasinski
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2 votes

For the first inequality, (-1, -1) is the solution. For the second inequality, (1, -1) is the solution.

Inequality 1: 2x + y > -4

To determine which point is a solution to the inequality, substitute the coordinates of each point into the inequality and evaluate:

For point (0, -5):

2(0) + (-5) > -4 → -5 > -4

This statement is false, so (0, -5) is not a solution.

For point (4, -12):

2(4) + (-12) > -4 → -4 > -4

This statement is false, so (4, -12) is not a solution.

For point (-1, -1):

2(-1) + (-1) > -4 → -3 > -4

This statement is true, so (-1, -1) is a solution.

For point (-3, 0):

2(-3) + 0 > -4 → -6 > -4

This statement is false, so (-3, 0) is not a solution.

Therefore, the solution to the inequality 2x + y > -4 is (-1, -1).

Inequality 2: y - 2x ≤ -3

For point (2, 4):

4 - 2(2) ≤ -3 → 0 ≤ -3

This statement is false, so (2, 4) is not a solution.

For point (1, -1):

-1 - 2(1) ≤ -3 → -3 ≤ -3

This statement is true, so (1, -1) is a solution.

For point (3, 4):

4 - 2(3) ≤ -3 → -2 ≤ -3

This statement is false, so (3, 4) is not a solution.

For point (-2, 3):

3 - 2(-2) ≤ -3 → 7 ≤ -3

This statement is false, so (-2, 3) is not a solution.

Therefore, the solution to the inequality y - 2x ≤ -3 is (1, -1).

User Ayrnieu
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