Industrial drawing and geometry; an introduction to various branches of technical drawing (1911)
Spooner, Henry John, 1856- · London, New York [etc.] Longmans, Green, and co. · leaf 57
s tlu-ough Pa, 2 as shown,^ you wiU find that ■ Wr 3, jj, „ y^ ^ But, of course, for the same sti-aight line the ratio — is constant, and may be written k. We maythen write the above equation y = kx. And in this form it is known as the equation of a straight line, which passes through the origin.… … m^ nr> ^^r ^ ^^ ^■ ^^ ^^ ^^ _ _ ^^ del X 20 Fig. 115.—Position of line in a plane. Fig. 116.—Graph oiy = Ix. 82. To draW a Graph.—Let y = hx. This being of the form y = hx, you now know that the graj)h is a straight line which must pass through,the origin. So the first thing to do is to…
Mechanical drawing · Geometrical drawing
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