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JEE • Mathematics

Straight Line

6 revision cards

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formula

Distance and Section Formula

The source opens Straight Line with distance between two points and section formula.

d=(x1−x2)2+(y1−y2)2d=\sqrt{(x_1-x_2)^2+(y_1-y_2)^2}
x=mx2±nx1m±n,y=my2±ny1m±nx=\frac{mx_2\pm nx_1}{m\pm n},\quad y=\frac{my_2\pm ny_1}{m\pm n}

Variables & Notation

mm

slope or ratio depending on context

Notes

  • The section formula was visually checked because extraction dropped the nn terms beside x1,y1x_1,y_1.