Multiple Solutions

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Find the set of solutions of a system of two equations with three variables.

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Equation of a Tangent

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Find the general equation of a line that touches, but does not pass through, a parabola.

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Modifying the Slope and the Y-Intercept

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Examine the changes of a function as the slope and y-intercept of a linear function are modified.

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Altitude to the Hypotenuse

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Investigate the relationship between sides of right triangles when an altitude is drawn to the hypotenuse of a right triangle.

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Gretel’s Goldfish

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When will Hansel and Gretel have the same number of goldfish?

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