Practice problem
The vertex of y=x2−2x−9y=x^2-2x-9y=x2−2x−9 is a point with coordinates (x1,y1)(x_1,y_1)(x1,y1). Compute 10x1+y110x_1 + y_110x1+y1.
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Type a concept, like “slope” or “photosynthesis”.
