Bailey, Frederick H. (Frederick Harold), 1865- · Boston, London, Ginn & Co. · leaf 48
ases are of special importance in elementary work. Case I. When both equations are of the first degree. LOCI. 33 There is, in general, one and only one pair of values whichsatisfies the equations. The two loci intersect, therefore, inone point, as is evident if we accept the statement in § 12that… … Fig. 20. An exceptional case arises when the two equations arecontradictory ; for example, 2x + % = 4,2x + ;5y = 7. Since we can find no values of x and y common to these twoequations, it follows that the two loci do not intersect. Infact, a plot shows that the equations represent parallelstraight…
Geometry, Analytic
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