##### Straight Lines – Notes

**Slope of a Line**

The angle made by a straight line in the anti-clockwise direction with the x-axis is called inclination.

Slope of a line (m) = tan q

Where q = inclination of the line

If q = 0^{0}

Slope (m) = 0

If q = 90^{0}

Slope (m) is not defined.

The slope of a line passing through points (x_{1}, y_{1}) and (x_{2}, y_{2}) is

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ShikshaHouse

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Class 11th Maths 10 - Straight Lines - Notes

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