An equation that represents a straight line in mathematical form is called an equation of a straight line.

A straight line can be expressed in mathematical form algebraically. There are five ways to write straight lines in algebraic form mathematically. Learn all of them one after one to understand the different cases of expressing straight lines in mathematics.

There are two types of slope intercept form linear equations. The first one is slope x-intercept form and the second one is slope y-intercept form of straight line.

$(1) \,\,\,\,\,\,$ $y \,=\, mx+c$

$(2) \,\,\,\,\,\,$ $x \,=\, m’y+c$

A linear equation in algebraic form in terms of $x$ and $y$ intercepts.

$\dfrac{x}{a}+\dfrac{y}{b} \,=\, 1$

A linear equation in algebraic form in terms of coordinates of a point and slope.

$y-y_{1} \,=\, m(x-x_{1})$

A linear equation in algebraic form in terms of coordinates of two points.

$y-y_{1} \,=\, \dfrac{y_{2}-y_{1}}{x_{2}-x_{1}}(x-x_{1})$

The above four cases of linear equations are simply written generally in the following standard form linear equation.

$ax+by+c \,=\, 0$

List of most recently solved mathematics problems.

Jul 04, 2018

Limit (Calculus)

Evaluate $\displaystyle \large \lim_{x \,\to\, \tan^{-1}{3}} \normalsize {\dfrac{\tan^2{x}-2\tan{x}-3}{\tan^2{x}-4\tan{x}+3}}$

Jun 23, 2018

Limit (Calculus)

Evaluate $\displaystyle \large \lim_{x \to 0} \normalsize \dfrac{e^{x^2}-\cos{x}}{x^2}$

Jun 22, 2018

Integral Calculus

Evaluate $\displaystyle \int \dfrac{1+\cos{4x}}{\cot{x}-\tan{x}} dx$

Jun 21, 2018

Limit

Evaluate $\displaystyle \large \lim_{x \to \infty} \normalsize {\sqrt{x^2+x+1}-\sqrt{x^2+1}}$

Math Doubts is a best place to learn mathematics and from basics to advanced scientific level for students, teachers and researchers.
Know more

Learn how to solve easy to difficult mathematics problems of all topics in various methods with step by step process and also maths questions for practising.