Collinearity of Points

Here you will learn condition for the collinearity of points with examples. Let’s begin – Collinearity of Points If the given points lie in the same line, then the given points are collinear otherwise they are non-collinear. Condition for collinearity of three given points Three given points A(\(x_1,y_1\)), B(\(x_2,y_2\)) and C(\(x_3,y_3\)) are collinear if any …

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Equation of Line Parallel to a Line

Here you will learn what is the equation of line parallel to a given line with examples. Let’s begin – Equation of Line Parallel to a Line The equation of the line parallel to a given line ax + by + c = 0 is ax + by + \(\lambda\), where \(\lambda\) is a constant. …

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Normal Form of a Line Equation

Here you will learn normal form of a line equation with proof and examples. Let’s begin – Normal Form of a Line (Perpendicular form of line) The equation of the straight line upon which the length of of the perpendicular from the origin is p and this perpendicular makes an angle \(\alpha\) with x-axis is …

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Two Point Form of a Line Equation

Here you will learn two point form of a line equation with proof and examples. Let’s begin – Two Point Form of a Line The equation of a line passing through two points \((x_1, y_1)\) and \((x_2, y_2)\) is  \(y – y_1\) = (\(y_2 – y_1\over x_2 – x_1\))(\(x_2 – x_1\)) Proof :  Let m …

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What is Slope Intercept Form of a Line Equation

Here you will learn what is slope intercept form of a line with examples. Let’s begin –  What is Slope Intercept Form of a Line ? The equation of a line with slope m and making an intercept on y-axis is y = mx + c Proof : Let the given line intersects y-axis at …

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