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Intersections

Instructions

Adjust the sliders in the applet to match the question in order to solve it. Consider the significance of the point and the vector . The point is the point of intersection. Consider the significance of .
Image

When finding when a line will intersect a plane, what is the key thing you are finding when you solve using a vector, or parametric equation?

Would the Cartesian Equation be useful to solve problems like this?