An elementary treatise on analytical geometry : embracing plane co-ordinate geometry, and an introduction to geometry of three dimensions (1869)
Johnson, William Woolsey, 1841-1927 · Philadelphia : J.B. Lippincott · leaf 33
ncides with the axis of Y, n = 0, andm is said to be infinitely great or simply infinite. If the revolutionbe continued in the same direction from this position, n becomesnegative and numerically increases, so that it still decreases alge-braically; m also becomes negative and numerically… … 28 THE STRAIGHT LINE. other, and either form y = mx or x = ny may be used; but inthe special cases in which one of these quantities is zero, the otheris infinite, and but one form can be used, the resulting equationsbeing y = 0 and x = 0,the equations of the axes. 32. Now let the lineBP be drawn…
Geometry, Analytic
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