I have an important question... Why is it called if we don't have the brain to come up with the answer?

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.

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Write the equations in logarithmic form 9^4=6,561