TOTD --- Monday, 12/2

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What is a rational number?

Back

A rational number is any number that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.

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What is an irrational number?

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An irrational number is a number that cannot be expressed as a simple fraction; it cannot be written as a ratio of two integers.

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What does the discriminant of a quadratic equation indicate?

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The discriminant indicates the nature of the roots of a quadratic equation. If it is positive, there are two real solutions; if it is zero, there is one real solution; if it is negative, there are no real solutions.

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What is the formula for the perimeter of a square?

Back

The perimeter of a square is given by the formula P = 4s, where s is the length of a side.

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What is the axis of symmetry in a quadratic function?

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The axis of symmetry is a vertical line that divides the parabola into two mirror-image halves, given by the formula x = -b/(2a) for a quadratic equation in the form ax^2 + bx + c.

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Front

What is the quadratic formula?

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What does it mean if a number is expressed in terms of pi (π)?

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It means the number is related to the ratio of the circumference of a circle to its diameter, and it is often irrational.

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What is a real solution in the context of quadratic equations?

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A real solution is a solution that can be represented on the number line, as opposed to an imaginary solution.