Elements of analytical geometry and of the differential and integral calculus (1866)
Davies, Charles, 1798-1876 · New York, Barnes & Co. · leaf 38
from the ori-gin, above the axis of -Z^ equalto 4 (Art. 13). Having assumedthe unit of length, lay it off 4times, from A to G. Through(7, draw a parallel to the axisof X, Then lay off CD, equal to the unit of length. Draw BE perpendicular to JT,and make it equal to 2. The indefinite straight line… … 3S ANALYTICAL GEOMETRY. [book I, AJFy plus AC, which is 4. If the coefficient of x werenegative, the equation would take the form, y = — 2x -\- 4; the point D would then fall atD, and the line would take thedirection C^\ Every straightline passing through the originof co-ordinates will lie in…
Geometry, Analytic · Calculus
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