Which of the following is a quadratic inequality? y < 2x + 7 y < x3 + x2 y < x2 - 5x
Answer:
The correct option is 3.
Step-by-step explanation:
The highest degree of quadratic inequality is 2.
In option 1,
\(y<2x+7\)
The highest degree is 1, therefore in is a linear inequality.
In option 2,
\(y
The highest degree is 3, therefore in is a cubic inequality.
In option 3,
\(y
The highest degree is 2, therefore in is a quadratic inequality.
Therefore option 3 is correct.