*The functions whose graph is a line are generally called linear functions in the context of calculus.*

*The functions whose graph is a line are generally called linear functions in the context of calculus.*

Often, the term linear equation refers implicitly to this particular case, in which the variable is sensibly called the unknown.

In the case of two variables, each solution may be interpreted as the Cartesian coordinates of a point of the Euclidean plane.

To yield a meaningful equation, the coefficient s are required to not be all zero.

In other words, a linear equation is obtained by equating to zero a linear polynomial over some field, from which the coefficients are taken (the symbols used for the variables are supposed to not denote any element of the field).

This year, surveyors measure 6 feet and 4 inches of snow.

The district put that in the linear expression (60 acre-feet ÷ 6 inches) x 76 inches.The melt comes from a big valley, and every year the district measures the snowpack and the water supply.It gets 60 acre-feet from every 6 inches of snowpack.The solutions of such an equation are the values that, when substituted for the unknowns, make the equality true.In the case of just one variable, there is exactly one solution (provided that .are the coefficients, which are often real numbers.The coefficients may be considered as parameters of the equation, and may be arbitrary expressions, provided they do not contain any of the variables.Water officials expect 760 acre-feet of snowmelt from the water.Say it’s springtime and Irene wants to fill her swimming pool.A line that is not parallel to an axis and does not passes through origin cuts the axes in two different points.The intercept values (for verifying this, it suffices to verify that the two given points satisfy the equation).

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