Discriminant

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.

Hint

How do you know that a quadratic equation has only one solution?

Answer

There is more than one answer. Here are some possibilities:
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

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