The discriminant explains how many solutions the quadratic function has. It is found using this formula:
Using the formula, there are three rules. Let's say the discriminant=d: d<0 - No solution ø d=0 -ONLY 1 solution d>0 -2 solutions
In the following graph, there are no solutions as the graph does not hit the x-axis at any point. Thereafter, the discriminant MUST be less than zero. Let's view the options check which one agrees with our answer.
A - Discriminant is greater than 0, which means two solutions. This is WRONG. B - Discriminant is less than 0, which means no solutions. CORRECT! C- Discriminant is equal to 0, which means one solution. WRONG!