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  2. System of linear equations - Wikipedia

    en.wikipedia.org/wiki/System_of_linear_equations

    The equations 3x + 2y = 6 and 3x + 2y = 12 are inconsistent. A linear system is inconsistent if it has no solution, and otherwise, it is said to be consistent. [7] When the system is inconsistent, it is possible to derive a contradiction from the equations, that may always be rewritten as the statement 0 = 1. For example, the equations

  3. Linear function (calculus) - Wikipedia

    en.wikipedia.org/wiki/Linear_function_(calculus)

    The slope of a nonvertical line is a number that measures how steeply the line is slanted (rise-over-run). If the line is the graph of the linear function f ( x ) = a x + b {\displaystyle f(x)=ax+b} , this slope is given by the constant a .

  4. Cubic equation - Wikipedia

    en.wikipedia.org/wiki/Cubic_equation

    The slope of line RA is twice that of RH. Denoting the complex roots of the cubic as g ± hi , g = OM (negative here) and h = √ tan ORH = √ slope of line RH = BE = DA . When the graph of a cubic function is plotted in the Cartesian plane , if there is only one real root, it is the abscissa ( x -coordinate) of the horizontal intercept of the ...

  5. Slope - Wikipedia

    en.wikipedia.org/wiki/Slope

    Slope illustrated for y = (3/2)x − 1.Click on to enlarge Slope of a line in coordinates system, from f(x) = −12x + 2 to f(x) = 12x + 2. The slope of a line in the plane containing the x and y axes is generally represented by the letter m, [5] and is defined as the change in the y coordinate divided by the corresponding change in the x coordinate, between two distinct points on the line.

  6. Linear equation - Wikipedia

    en.wikipedia.org/wiki/Linear_equation

    A non-vertical line can be defined by its slope m, and its y-intercept y 0 (the y coordinate of its intersection with the y-axis). In this case, its linear equation can be written = +. If, moreover, the line is not horizontal, it can be defined by its slope and its x-intercept x 0. In this case, its equation can be written

  7. Polynomial - Wikipedia

    en.wikipedia.org/wiki/Polynomial

    It may happen that this makes the coefficient 0. [12] Polynomials can be classified by the number of terms with nonzero coefficients, so that a one-term polynomial is called a monomial, [d] a two-term polynomial is called a binomial, and a three-term polynomial is called a trinomial. A real polynomial is a polynomial with real coefficients.

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  9. Completing the square - Wikipedia

    en.wikipedia.org/wiki/Completing_the_square

    Given any monic quadratic + +, it is possible to form a square that has the same first two terms: (+) = + +. This square differs from the original quadratic only in the value of the constant term. Therefore, we can write x 2 + b x + c = ( x + 1 2 b ) 2 + k , {\displaystyle x^{2}+bx+c\,=\,\left(x+{\tfrac {1}{2}}b\right)^{2}+k,} where k = c − b ...