Summary Students learn about four forms of equations: They graph and complete problem sets for each, converting from one form of equation to another, and learning the benefits and uses of each.

The coefficients may be considered as parameters of the equation, and may be stated as arbitrary expressionsrestricted to not contain any of the variables. In the words of algebra, a linear equation is obtained by equating to zero a linear polynomial over some fieldwhere the coefficients are taken from, and that does not contain the symbols for the indeterminates.

The solutions of such an equation are the values that, when substituted to the unknowns, make the equality true.

The case of just one variable is of particular importance, and it is frequent that the term linear equation refers implicitly to this particular case, in which the name unknown for the variable is sensibly used.

All the pairs of numbers that are solutions of a linear equation in two variables form a line in the Euclidean planeand every line may be defined as the solutions of a linear equation. This is the origin of the term linear for qualifying this type of equations.

More generally, the solutions of a linear equation in n variables form a hyperplane of dimension n — 1 in the Euclidean space of dimension n. Linear equations occur frequently in all mathematics and their applications in physics and engineeringpartly because non-linear systems are often well approximated by linear equations.

This article considers the case of a single equation with coefficients from the field of real numbersfor which one studies the real solutions.

All its content applies for complex solutions and, more generally, for linear equations with coefficient and solutions in any field. For the case of several simultaneous linear equations, see System of linear equations.Write the standard form of the equation of the line described.

through (-2,3), perpendicular to y=2/7x+5. Sep 13, · This video works through # on the Algebra 1, Chapter 2 Review for the school year. The instructions tell us to "Write the slope-intercept form of the equation of the line described.".

The equation of a line is typically written as y=mx+b where m is the slope and b is the y-intercept.. If you know the slope (m) any y-intercept (b) of a line, this page will show you how to find the equation of the line.

Equations of Lines and Planes Lines in Three Dimensions A line is determined by a point and a direction. Thus, to find an equation representing a line in three dimensions choose a point P_0 on the line and a non-zero vector v parallel to the line.

Since any constant multiple of a vector still points in the same direction, it seems reasonable that a point on the line can be found be starting at.

This is called the slope-intercept form because "m" is the slope and "b" gives the y-intercept. (For a review of how this equation is used for graphing, look at slope and graphing.). I like slope-intercept form .

Standard Form Equation of Line-- What it is and how to graph it. Explained with examples and pictures and many practice problems.

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SparkNotes: Writing Equations: Slope-Intercept Form