Bailey, Frederick H. (Frederick Harold), 1865- · Boston, London, Ginn & Co. · leaf 50
we eliminate y in this way. There results,in general, a quadratic equation in x, let us say ax-+bx + c = 0, (1) the roots of which are the abscissas of the required points ofintersection. When the values of x have been found, thecorresponding values of y are found hy siihsthuting in thesimple… … 36 PLANE ANALYTIC GEOMETRY. Eliminating y by substitution from (1) into (2), there results5x2-12x + 4 = 0,which gives x = 2 or |. The corresponding ys found from (1) are —1 or y-.Therefore the points of intersection are (2, — 1) and (|, -U-). (Fig. 21.)Ex. 2. To find the intersections of y + 2x = 5…
Geometry, Analytic
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