A. How often are these statements true? Write always, sometimes or never on the space before each item
1. Changing the sign of a quadratic inequality also changes its solution set.
2. The solution set of a quadratic inequality is best written as an absolute value inequality
3. There is a solution set for every quadratic inequality.
4. The critical values of a quadratic inequality may also be used as test points.
5. The critical values of a quadratic inequality are equal to the roots of the corresponding equation
6. The critical values of a strict quadratic inequality are part of its solution set.
_7. If the test point of an interval yields a positive value, then that interval is part of the solution set of
the given quadratic inequality
8. There is a quadratic inequality whose entire solution set is the interval [4,00).
9. If a quadratic equation has roots which are not purely real numbers then the solution set of any
inequality derived from that equation is the empty set.
10. The critical values of a quadratic inequality may also be used as points."