Question

Which graph represents a quadratic function that has one real zero?

Answer 1

Answer:

Quadratic functions have equations that have two solutions. However, there are specific cases where one answer can be non-real, that is, a complex solution. When that happens, it means the graph of the function has only one x-intercept point.

In this case, the graph that has one real zero is attached. Observe that the parabolla has only one point which intercepts with x-axis, that's the unique real zero.