Elements of analytical geometry and the differential and integral calculus (1856)
Robinson, Horatio N. (Horatio Nelson), 1806-1867 · Cincinnati : J. Ernst · leaf 131
orm y=hz-]-p. These two equations taken together are said to be equationsof the line, because the first equation is a general equation forall lines that can be drawn in the first projecting plane, and thesecond equation is a general equation for all lines that can bedrawn in the second projecting… … in ANALYTICAL GEOMETRY. Make z=0, then x=l, and y=—2.Now take AF=1, and draw Fmparallel to the axis of Y, makingFm=—2 ; then 7n is the point inthe plane xy, through which theline must pass. Now take z equal to any numberat pleasure, say 1, then we shallhave x=3 and2/=l.Take AF=3, Fm=-\~1, and from…
Geometry, Analytic · Calculus
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