Complete parts a-c for each quadratic function.
a. Find the y-intercept, the equation of the axis of symmetry, and the
x-coordinate of the vertex.
b. Make a table of values that includes the vertex.
c. Use this information to graph the function.
12. f(x) = 2x²
14. f(x) = x² + 4
16. f(x) = 2x² - 4
18. f(x) = x² - 4x + 4
20. f(x) = x² + 4x + 5
Jot
13. f(x) = -5x²
15. f(x)=x²-9
17. f(x) = 3x² +1
19. f(x) = x² - 9x +9
21. f(x) = x² + 12x + 36