How do you figure out the compression of a parabola?
A parabola is stretched away from the xaxis, thus making it more narrow, by multiplying the yvalue by a number greater than 1. On the other hand, a parabola is compressed down toward the xaxis, thus making it wider, by multiplying the yvalue by a number between 0 and 1.
For example, if you changed a quadratic equation from y = x² to y = 0.5x² , it would be compressed down toward the xaxis by a factor of 0.5, because each ycoordinate is multiplied by 0.5. Ask the House
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