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Which of the following ordered pairs is a solution of the system of inequalities?

y> 2x² - 8
ys-x²-3x+4
A) (5,0)
B) (-3,-2)
C) (4, -3)
D) (0.-5)

1 Answer

4 votes

Final answer:

The solution to the system of inequalities y > 2x² - 8 and y ≤ x² - 3x + 4 can be found by testing each of the ordered pairs. The only ordered pair that satisfies both inequalities is (0, -5), which corresponds to option D.

Step-by-step explanation:

The student's question relates to finding a solution for a system of inequalities. The given system consists of two inequalities: y > 2x² - 8 and y ≤ x² - 3x + 4. Let's evaluate each of the given ordered pairs to find the correct one.

To evaluate each ordered pair, we will plug the x-coordinate into the inequalities and check if the resulting value is less than or equal to the y-coordinate for the second inequality and greater than for the first.

For (5,0): y should be greater than 2(5)² - 8 = 42 and less than or equal to 5² - 3(5) + 4 = 14. Zero does not satisfy either inequality.

For (-3, -2): y should be greater than 2(-3)² - 8 = 10 and less than or equal to (-3)² - 3(-3) + 4 = 16. Minus two does not satisfy the first inequality.

For (4, -3): y should be greater than 2(4)² - 8 = 24 and less than or equal to 4² - 3(4) + 4 = 8. Minus three does not satisfy the first inequality.

For (0, -5): y should be greater than 2(0)² - 8 = -8 and less than or equal to 0² - 3(0) + 4 = 4. Minus five satisfies both inequalities, making it the correct option.

Therefore, the correct ordered pair that is a solution to the given system of inequalities is (0, -5), which corresponds to option D.

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User Pseudorandom
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