Directions: Using the digits 0 to 9 at most one time each, fill in the boxes to make one function have no real roots, another function have one real root, and the last function have two real roots.
a) y = 5x^2 + 3x + 7
b) y = 1x^2 + 6x + 9
c) y = 4x^2 + 8x + 2
Click on this link to see another possibility: Discriminant
Source: Lynda Chung