True or False. Write T if the statement is true and F if false.
1. All functions are relation.
2. All relations are function.
3. Quadratic function is a third-degree polynomial.
4. The set of x-coordinates is called domain.
5. Y-coordinate is called ordinate.
6. In quadratic function f(x) = y.
7. Quadratic function can be represented using line graph.
8. Y is the independent variable.
9. In quadratic function, the variable can be written in the numerator.
10. The graph of a quadratic function is a parabola that opens sideward.​